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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	Noise Twist Go ₹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, User Manual, 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	NoiseFit Twist Go
Launch Date	30/09/2025	15/09/2025	18/06/2023	06/02/2026	18/07/2024	12/01/2023	31/10/2023
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	Jet Black, Silver Grey, Rose Pink, Gold Link, Silver Link, Elite Black, Rose Wine
Brand	Noise	FireBoltt	GoBoult	BoAt	Noise	Noise	Noise
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	1.39, 3.53
Resolution	240, 240 pixels	466, 466 pixels	466, 466 pixels	240, 240 pixels	410, 502 pixels	240, 240 pixels	240, 240 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
Touch Type	Capacitive Touchscreen	Full Capacitive Touch	Full Touch	Full Capacitive Touch	Capacitive multi-touch	Multi-touch capacitive touchscreen	Full Touch
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	Up to 500 nits
Refresh Rate	Not Specified	60Hz	60 Hz	60 Hz	Standard AMOLED refresh rate	Standard 60Hz (typical for TFT)	60Hz
Color Gamut / HDR Support	Not Specified	Not Specified	Not Specified	Standard	Full color AMOLED display	Standard RGB color gamut	Not Specified
Screen Protection	Not Specified	Flat Curved Glass	2.5D Curved Glass	Flat Toughened Glass	Curved tempered glass with anti-fingerprint coating	Not specified	2.5D Glass
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	Round Dial, approx. 46mm diameter (exact mm not specified)
Weight	31 grams	60 g	56.5 g	Not Specified	39 grams	27.6 grams	Approx. 40g - 45g
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	Metallic Finish (Zinc Alloy) with Polycarbonate back
Front Protection	Not Specified	Curved Glass	Glass	Toughened Flat Glass	Curved tempered glass with anti-fingerprint coating	Not specified	2.5D Curved Glass
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	22mm Silicone, Metallic Link, or Mesh options
Removable / Replaceable Strap	Not Specified	Yes	Yes	Yes	Yes	Yes	Yes
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	IP67 Water Resistant
Dust Resistance	Not Specified	IP68 Dust Resistant	IP67 Dust Resistant	Dust proof	IP68 certified	IP68 - Dust resistant	IP67 Dust Resistant
Durability Certifications	IP Certified	Not Specified	None	IP68 Certified	IP68 water and dust resistance certification	IP68 certified	Not Specified
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	Touch Screen, Functional Rotating Crown
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)	Noise OS (RTOS)
Chipset / SoC	Not Specified	Single Core Digital Chipset	Single-chip 2-in-1 Bluetooth SoC	Not Specified	Not Specified	Not publicly disclosed	Single-chip Tru Sync™ Technology
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	24/7 Heart Rate Monitor
ECG	Not Supported	No	No	Not Available	No ECG support	Not available	No
SpO₂ / Blood Oxygen	SpO2 Blood Oxygen sensor	Yes	SpO2 Sensor	SpO2 Blood Oxygen Monitoring	Yes - Optical SpO2 sensor	Yes - Blood oxygen saturation monitoring	SpO2 Monitoring
Skin Temperature Sensor	Not Supported	No	No	Not Available	Not available	Not available	No
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 Monitor with Stages
Step Counter	Built-in pedometer	Yes	Yes	Integrated Pedometer	Yes - Built-in pedometer	Yes - Pedometer with step tracking	Yes
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	No (Connected GPS)
Accelerometer	3-axis accelerometer	Yes	Yes	Tri-axial Accelerometer	Yes	Yes - Motion detection	Yes
Gyroscope	Not Specified	Not Specified	Not Specified	Not Available	Yes	Yes - Rotation sensing	No
Barometer	Not Supported	No	No	Not Available	No	Not available	No
Compass	Not Supported	No	No	Not Available	No	Not available	No
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, Breathe Practice, Female Cycle Tracker
Connectivity
Wi-Fi	Not Supported	No	No	No Wi-Fi support	No Wi-Fi support	Not available	No
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 v5.3
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	No
ANT+	No	No	No	No	No	No	No
Battery
Capacity	270 mAh	300 mAh	Not Specified (Approx 250-300mAh)	410 mAh	300 mAh	300 mAh lithium-ion	210 mAh
Fast Charging Support	Not Specified	No	No	Full charge in approximately 50 minutes	No fast charging support	Not available	No
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), 2 Days (Calling)
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
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	Power Saving Mode
Memory & Storage
RAM	Not Specified	System RAM only	Not Specified	Not Specified	Not specified	Not specified	Not 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)	Stores call logs and up to 10 contacts
Expandable Storage	No	No	No	No	No expandable storage	Not available	No
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 Metallic 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	2 (Side Button + Rotating Crown)
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
Screen Glass Type	Not Specified	Glass	2.5D Glass	Flat Toughened Glass	Curved tempered glass	Standard protective glass (not specified)	2.5D Curved Glass
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	No
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	Female Cycle Tracker
Noise Monitoring	No	No	No	Not Available	No	Not available	No
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 Practice
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
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
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	AI Voice Assistant (Siri/Google)
Bluetooth Audio Output	No	Phone Calls Only	No	Audio via watch speaker	Yes - Bluetooth audio output for music control	Not available - No music streaming	No
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, SMS, Social Media, Email
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	Quick Reply (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)	Remote Music Control
Find My Phone	Yes	Yes	Yes	Available via Bluetooth	Yes - Find My Phone feature	Yes - Locate paired smartphone	Yes
Remote Camera Shutter	Yes	Yes	Yes	Remote shutter control for phone	Yes - Remote camera control from watch	Yes - Remote camera trigger for photos	Yes
Security
Fingerprint Sensor	No	No	No	No	No	No	No
Face Unlock	No	No	No	No	No	No	No
NFC Payment Security	No	No	No	Not Available	No NFC support - no contactless payments	Not available	No
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	Yes (via App)
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 Pogo Pin
Optional Docks / Stands	Not Specified	None	None	Not Available	Magnetic charging dock available separately	None mentioned	None
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	Charging Cable, User Manual
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	No
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	100+ Cloud Watch Faces
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	NoiseFit 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
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	Alarm, Stopwatch, Timer, Weather, Calculator, World Clock