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Detailed side-by-side comparison of specifications, features and latest prices in India.

Specification	Noise Junior Champ 3 ₹1,999 Prices and availability may change on the seller's site View Price	Fire-Boltt Axiom ₹1,999 Prices and availability may change on the seller's site View Price	Boult Crown R Pro ₹2,399 Prices and availability may change on the seller's site View Price	boAt Lunar Atlas,GPS Tracking,1.39″ Display,Rugged Body,Functional Crown Smartwatch ₹1,899 Prices and availability may change on the seller's site View Price	Noise ColorFit Pulse 4 Max ₹1,899 Prices and availability may change on the seller's site View Price	Noise Twist Round dial ₹1,599 Prices and availability may change on the seller's site View Price	Fastrack Limitless FS2+ ₹1,599 Prices and availability may change on the seller's site View Price
General
In The Box	Smartwatch, Magnetic Charging Cable, User Manual, Warranty Card	Smartwatch, Wireless Charging Dock, User Manual, Warranty Card	Smartwatch, Magnetic Charging Cable, User Manual, Warranty Card	1 Unit Smartwatch, 1 Unit USB Magnetic Charging Cable, 1 Unit User Manual, 1 Unit Warranty Card	Smartwatch, Magnetic Charging Cable, User Manual, Warranty Card	Smartwatch, Magnetic Charging Cable, User Manual, Warranty Card	Smartwatch, Magnetic Charging Cable, Quick Start Guide, Warranty Card
Model Name	Noise Junior Champ 3	Fire-Boltt Axiom	Crown R Pro	boAt Lunar Atlas	ColorFit Pulse 4 Max / NSW-421	NoiseFit Twist	Fastrack Limitless FS2+
Launch Date	30/09/2025	15/09/2025	18/06/2023	06/02/2026	18/07/2024	12/01/2023	10/07/2024
Colors	Black Blaze, Astro Orbit, Cotton Cloud, Arctic Storm	Black, Silver, Orange, Gold	Frozen Silver, Thunder Black, Volcanic Orange	Ranger Black, Phantom Blue	Jet Black, Deep Wine, Rose Gold, Space Blue, Black Link, Calm Silver Link, Silver Link	Jet Black, Silver Grey, Rose Wine, Rose Pink, Space Blue	Charcoal Black, Wine Red, Copper Teal, Blue, Beige
Brand	Noise	FireBoltt	GoBoult	BoAt	Noise	Noise	Fastrack
Display
Display Size	1.4, 3.55	1.43, 3.63	1.43, 3.63	1.39, 3.5	1.96, 4.98	1.38, 3.5	2.01, 5.1
Resolution	240, 240 pixels	466, 466 pixels	466, 466 pixels	240, 240 pixels	410, 502 pixels	240, 240 pixels	320, 320 pixels
Panel Type	IPS LCD	AMOLED	Super AMOLED	Color HD Display (TFT-LCD)	AMOLED with 190 ppi	TFT LCD with 246 PPI pixel density	TFT LCD UltraVU Display
Touch Type	Capacitive Touchscreen	Full Capacitive Touch	Full Touch	Full Capacitive Touch	Capacitive multi-touch	Multi-touch capacitive touchscreen	Capacitive Touchscreen
Always-on Display	No	Yes	Yes	No	Yes	No	No
Brightness	5-level adjustable brightness	1000 nits (Peak)	600 nits	500 nits	500-600 nits (estimated based on comparable models)	550 nits peak brightness	Not specified
Refresh Rate	Not Specified	60Hz	60 Hz	60 Hz	Standard AMOLED refresh rate	Standard 60Hz (typical for TFT)	Not specified
Color Gamut / HDR Support	Not Specified	Not Specified	Not Specified	Standard	Full color AMOLED display	Standard RGB color gamut	Standard color gamut, no HDR support
Screen Protection	Not Specified	Flat Curved Glass	2.5D Curved Glass	Flat Toughened Glass	Curved tempered glass with anti-fingerprint coating	Not specified	Not specified
Body
Dimensions	44 x 40 x 13 mm	Standard 46mm dial size	46 x 46 x 11 mm (Approx)	264.9 x 48.6 x 12.9 mm	46.9 mm dial size	45.7 x 52.2 x 11.9 mm	Not Specified
Weight	31 grams	60 g	56.5 g	Not Specified	39 grams	27.6 grams	48 grams
Case Material	Acrylonitrile Butadiene Styrene (ABS) plastic	Stainless Steel / Metal Alloy	Zinc Alloy Frame	Rugged Metallic Alloy Middle Frame with Plastic Bottom	Metal with metallic finish	PC+ABS plastic with metal unibody appearance	Polycarbonate
Front Protection	Not Specified	Curved Glass	Glass	Toughened Flat Glass	Curved tempered glass with anti-fingerprint coating	Not specified	Not specified
Strap / Bracelet Options	Hypoallergenic silicone strap	Silicone, Stainless Steel (variant dependent)	Silicone, Metallic (variant dependent)	22mm Silicone Strap	22mm silicone standard; metal mesh/chain and leather straps available separately	22mm silicone with quick-release mechanism	Silicone
Removable / Replaceable Strap	Not Specified	Yes	Yes	Yes	Yes	Yes	No
Water Resistance	1 ATM (Up to 10m depth splash resistance)	IP68 Water Resistant	IP67 Water Resistant	IP68 water resistant up to 1.5m for 10 minutes	IP68 - Up to 1.5m depth	IP68 - Water resistant to 1.5m depth	IP68 (1.5m water resistance)
Dust Resistance	Not Specified	IP68 Dust Resistant	IP67 Dust Resistant	Dust proof	IP68 certified	IP68 - Dust resistant	Yes, dust proof (IP68 certified)
Durability Certifications	IP Certified	Not Specified	None	IP68 Certified	IP68 water and dust resistance certification	IP68 certified	IP68 certified
Primary Controls	Touch screen and single physical side button	Rotating Crown, Touch Screen, Push Button	Touch Screen, Functional Crown, Push Button	Touch Screen, Functional Rotating Crown, Side Buttons	Functional rotating crown, side push button, touch screen	Touch screen with gesture controls and wake-up gesture	Functional Crown (touch-sensitive), Touchscreen
Processor
Operating System	Proprietary Kids Smartwatch OS	Proprietary RTOS	Boult OS (RTOS)	Proprietary RTOS	Proprietary Noise OS (compatible with iOS 11.0+ and Android 9.0+)	Proprietary Real-Time Operating System (RTOS)	Android, iOS compatible
Chipset / SoC	Not Specified	Single Core Digital Chipset	Single-chip 2-in-1 Bluetooth SoC	Not Specified	Not Specified	Not publicly disclosed	Not Specified
CPU Cores & Clock Speed	Not Specified	Single Core	Not Specified	Not Specified (Optimized for low power)	Not specified	Not specified	Not Specified
GPU	—	Integrated	Not Specified	—	Not Specified	Not specified	Not specified
Health & Fitness Sensors
Heart Rate Monitor	Optical heart rate sensor	Optical PPG Sensor	24/7 Heart Rate Monitor	Continuous Optical Heart Rate Monitoring	Yes - Optical PPG sensor with continuous and manual detection	Yes - 24/7 continuous optical PPG monitoring	24x7 Heart Rate Monitoring
ECG	Not Supported	No	No	Not Available	No ECG support	Not available	No ECG support
SpO₂ / Blood Oxygen	SpO2 Blood Oxygen sensor	Yes	SpO2 Sensor	SpO2 Blood Oxygen Monitoring	Yes - Optical SpO2 sensor	Yes - Blood oxygen saturation monitoring	SpO2 / Blood Oxygen Monitor with continuous monitoring
Skin Temperature Sensor	Not Supported	No	No	Not Available	Not available	Not available	Not mentioned
Sleep Tracking	Monitors sleep duration and quality	Yes (Light, Deep, REM)	Sleep Monitor (Light, Deep, REM)	Sleep Stage Tracking (Light, Deep, REM)	Yes - Detailed sleep stages (Light, Deep, REM)	Yes - Automatic sleep detection with stage analysis	Sleep Tracker with sleep quality analysis
Step Counter	Built-in pedometer	Yes	Yes	Integrated Pedometer	Yes - Built-in pedometer	Yes - Pedometer with step tracking	Pedometer / Step Counter
GPS	No built-in GPS tracking	No (Connected GPS only)	Connected GPS	App-Powered GPS Tracking (Connected via Phone)	No built-in GPS - Connected GPS only via smartphone	Not available - Bluetooth only	Connected GPS (via smartphone only)
Accelerometer	3-axis accelerometer	Yes	Yes	Tri-axial Accelerometer	Yes	Yes - Motion detection	Yes, Accelerometer sensor
Gyroscope	Not Specified	Not Specified	Not Specified	Not Available	Yes	Yes - Rotation sensing	Not specified
Barometer	Not Supported	No	No	Not Available	No	Not available	Not specified
Compass	Not Supported	No	No	Not Available	No	Not available	Not specified
Other Sensors	Step counter, Calorie tracker, Distance tracker	Sedentary Reminder, Hydration Reminder	Blood Pressure (Simulated), Menstrual Cycle Tracker, Breath Training	Stress Monitoring, Female Cycle Tracking	Calorie burn estimation, activity history, stress measurement, menstrual cycle tracking, VO2 Max	Stress monitor, activity tracking, calorie counter, female cycle tracker	Stress Monitor, Menstrual Cycle Tracker, Women's Health Tracking
Connectivity
Wi-Fi	Not Supported	No	No	No Wi-Fi support	No Wi-Fi support	Not available	No Wi-Fi support
Bluetooth	Bluetooth v5.3	Bluetooth 5.0	Bluetooth 5.2	Bluetooth version 5.4	Bluetooth 5.3	Bluetooth 5.3 with Tru Sync technology	Bluetooth 5.3
NFC	No	No	No	No	No	No	No
Cellular Connectivity	No Cellular/SIM support	No	No	None	Wi-Fi Only (via smartphone)	None - Bluetooth only	Bluetooth calling only (SingleSync), no standalone cellular
ANT+	No	No	No	No	No	No	Not Specified
Battery
Capacity	270 mAh	300 mAh	Not Specified (Approx 250-300mAh)	410 mAh	300 mAh	300 mAh lithium-ion	280 mAh Lithium Polymer
Fast Charging Support	Not Specified	No	No	Full charge in approximately 50 minutes	No fast charging support	Not available	Yes - NitroFast Charging (10 min for 1 day use)
Estimated Runtime	Up to 3 to 5 days on typical use	Up to 7 Days (Typical)	Up to 5 Days (Typical)	7-10 days typical; 2-3 days calling	Up to 7 days typical use, 30 days standby	7 days typical use, 25 days standby, 2 days with heavy BT calling	Up to 7 days typical use, 10+ days standby
Charging Method	Magnetic Pogo Pin	Wireless Magnetic Dock	Magnetic Charging	USB Magnetic 2-pin Pogo Cable	Magnetic 2-pin connector	Proprietary magnetic pogo pins connector	Magnetic charging connector
Battery Saver Modes	Scheduled Power Off	Power Saver Mode	Yes	Automatic trigger at 10% battery	Yes - Screen brightness reduction and selective heart rate monitoring	Brightness reduction, disable 24/7 HR monitoring, low power mode	Not mentioned
Memory & Storage
RAM	Not Specified	System RAM only	Not Specified	Not Specified	Not specified	Not specified	Not officially specified
Internal Storage	Not Specified	No user accessible storage	Not Specified	Flash memory for health data and contacts	Not specified	Limited (cloud-based watch faces only)	Not officially specified
Expandable Storage	No	No	No	No	No expandable storage	Not available	Not applicable
Design & Comfort
Bezel Type	Fixed bezel with switchable poppy bumpers	Fixed with Rotating Crown	Fixed	Fixed Rugged Bezel	Fixed bezel with metallic finish	Fixed circular bezel with flat surface design	Fixed, minimal bezel
Buttons / Crown	Single physical side button	1 Rotating Crown, 1 Push Button	Rotating Crown + 1 Button	Functional Rotating Crown and 2 Physical Buttons	Functional mechanical crown + side push button	No physical buttons - Touch controls only	Functional Crown (touch and pressure sensitive)
Vibration Motor	Built-in vibration for alerts	Yes	Yes	Haptic Vibration Motor	Yes - Haptic feedback vibration alerts	Yes - Linear haptic motor for haptic feedback	Yes, haptic feedback vibration motor
Screen Glass Type	Not Specified	Glass	2.5D Glass	Flat Toughened Glass	Curved tempered glass	Standard protective glass (not specified)	Not specified
Health & Safety Features
Fall Detection / SOS Calling	On-device SOS button and manual emergency contact storage	No	No	SOS emergency calling via phone	Yes - SOS technology with emergency calling	Not available	Emergency SOS capability available
Menstrual Cycle / Health Tracking	Not Supported	Yes (Female Health Tracking)	Female Health Tracker	Female Wellness Tracking via App	Yes - Female health cycle tracker	Yes - Female health tracking with cycle prediction	Women's Health Tracking with menstrual cycle tracking
Noise Monitoring	No	No	No	Not Available	No	Not available	Not mentioned
Guided Breathing / Mindfulness Features	Not Specified	Breathing Exercises	Breath Training	Guided Breathing / Relax Mode	Yes - Guided breathing practice feature	Yes - Breathe Practice guided breathing exercises	Breathe Exercise feature
Audio & Voice
Built-in Speaker	Built-in speaker for alerts and learning audio	Yes	Yes	Built-in speaker for Bluetooth calls	Yes	Yes - For Bluetooth calling	Yes, built-in speaker
Microphone	Built-in microphone for voice notes	Yes	Yes	Built-in microphone with ENx Noise Suppression	Yes - Dual microphone setup	Yes - For Bluetooth calling	Yes, high-quality microphone
Voice Assistant	No	AI Voice Assistant (Siri/Google via Phone)	Yes (AI Voice Assistant)	Siri and Google Assistant supported	Yes - AI Voice Assistant with AI Search feature	Not available	Yes, AI Voice Assistant (compatible with Alexa)
Bluetooth Audio Output	No	Phone Calls Only	No	Audio via watch speaker	Yes - Bluetooth audio output for music control	Not available - No music streaming	Yes, via Bluetooth headphones
Notifications & Controls
Notification Support	Call alerts, SMS/text alerts, and App notifications	Call, SMS, WhatsApp, Social Media	Call, SMS, App Notifications	Alerts for calls, SMS, and app notifications	Call alerts, SMS/messaging alerts, social media app notifications	Yes - Call alerts, SMS alerts, app notifications with preview	Call Alerts, SMS/Messaging, App Notifications, Social Media Alerts
Quick Reply Options	Not Specified	No	No	Predefined quick reply for calls (Android only)	Call rejection available (no voice/text reply)	Yes - Predefined quick reply messages only	Predefined Quick Replies (Android only)
Music Control / Playback	Remote music control for paired smartphone	Music Control (Remote)	Music Control (Phone)	Remote music control for phone	Yes - Play/Pause, Next/Previous Track, Volume Control	Yes - Remote phone music control (play/pause, volume, track skip)	Full music control: Play/Pause, Volume, Previous/Next, Streaming control
Find My Phone	Yes	Yes	Yes	Available via Bluetooth	Yes - Find My Phone feature	Yes - Locate paired smartphone	Yes, Find My Phone feature
Remote Camera Shutter	Yes	Yes	Yes	Remote shutter control for phone	Yes - Remote camera control from watch	Yes - Remote camera trigger for photos	Yes, Camera Control feature
Security
Fingerprint Sensor	No	No	No	No	No	No	Not Specified
Face Unlock	No	No	No	No	No	No	Not Specified
NFC Payment Security	No	No	No	Not Available	No NFC support - no contactless payments	Not available	No NFC support
Find My Watch	Yes, via Noise Junior App	Yes (via App)	Yes (via App)	Available via boAt Crest App	Not confirmed in specifications	Not available	Not explicitly mentioned
Ports & Accessories
Charging Connector Type	Magnetic Pogo Pin	Wireless Charging Dock	Magnetic Pogo Pin	Magnetic Pogo Pin	Magnetic 2-pin proprietary connector	Proprietary magnetic pogo pins connector	Magnetic charging connector (proprietary)
Optional Docks / Stands	Not Specified	None	None	Not Available	Magnetic charging dock available separately	None mentioned	None mentioned
Bundled Extras	1 Smartwatch, 1 Magnetic Charger, 2 Extra Switchable Bumpers, User Manual, Warranty Card	Charging Cable, Manual	Charging Cable, User Manual	1 Magnetic Charging Cable	User manual, warranty card, charging cable	Magnetic charging cable, user manual, warranty card	Quick Start Guide, Warranty Card, Magnetic Charging Cable
Software & Apps
App Store Availability	No proprietary watch app store	No	None	No standalone app store	NoiseFit App on Google Play Store and Apple App Store	Cloud-based proprietary store via NoiseFit app	Fastrack Smart World App (Google Play compatible)
Customization Options	100+ Cloud-based watch faces; 3-in-1 look via switchable bumpers	100+ Cloud Watch Faces	150+ Watch Faces, Menu Styles	100+ Cloud Watch Faces, Customizable Watch Face Studio	100+ cloud-based watch faces + AI Create feature for unlimited AI-powered custom watch face generation	100+ cloud-based watch faces with customization through NoiseFit app	200+ Watchfaces, Multiple Menu Styles, Custom Watch Face Creation, 110+ Sports Modes, In-Built Games, Calculator
Companion App	Noise Junior App	Fire-Boltt App / Da Fit	Boult Fit (GoBoult Fit)	boAt Crest App	NoiseFit App (iOS 11.0+ / Android 9.0+)	NoiseFit App - Health tracking, notifications, watch face management	Fastrack Smart World App (formerly Fastrack Reflex World App)
OTA Updates	Supports over-the-air firmware updates	Yes	Yes	Firmware updates via App	Yes - OTA updates supported	Yes - OTA firmware updates available	Yes, over-the-air updates available
Pre-installed Apps	Learning Hub (Games, EduCards, Quizzes), Habit Builder, Smart Scheduler, Alarm, Timer, Stopwatch, Weather	Alarm, Stopwatch, Timer, Weather, Calculator, Games	Alarm, Stopwatch, Weather, Calculator, Games	100+ Sports Modes, QR Tray, Weather, Calculator, Games	NoiseFit Health Suite, AI voice assistant, activity tracking, weather app, calculator, stopwatch, timer, alarm, reminder, music control	Noise Health Suite, Breathe Practice, Female Health Tracker, Stress Monitor, Sleep Monitor, Activity Tracker, 100+ Sports Modes, Calculator, Weather, Reminders, Alarm, Timer, Stopwatch, World Clock	110+ Sports Modes, 200+ Watchfaces, In-Built Games, AI Voice Assistant, Calculator, Alarm Clock, Stopwatch, Timer, Stress Monitor