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

Specification	Noise ColorFit Pulse 4 Max ₹2,499 Prices and availability may change on the seller's site View Price	Fire-Boltt Axiom ₹2,699 Prices and availability may change on the seller's site View Price	Noise Junior Champ 3 ₹1,999 Prices and availability may change on the seller's site View Price	Boult Crown R Pro ₹1,999 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	Fastrack Astor FR2 Pro ₹2,799 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	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	Smart Watch, Magnetic Charging Cable, User Manual, Warranty Card
Model Name	ColorFit Pulse 4 Max / NSW-421	Fire-Boltt Axiom	Noise Junior Champ 3	Crown R Pro	boAt Lunar Atlas	Fastrack Astor FR2 Pro
Launch Date	18/07/2024	15/09/2025	30/09/2025	18/06/2023	06/02/2026	15/09/2024
Colors	Jet Black, Deep Wine, Rose Gold, Space Blue, Black Link, Calm Silver Link, Silver Link	Black, Silver, Orange, Gold	Black Blaze, Astro Orbit, Cotton Cloud, Arctic Storm	Frozen Silver, Thunder Black, Volcanic Orange	Ranger Black, Phantom Blue	Black, Silver, Rose Gold, Grey
Brand	Noise	FireBoltt	Noise	GoBoult	BoAt	Fastrack
Display
Display Size	1.96, 4.98	1.43, 3.63	1.4, 3.55	1.43, 3.63	1.39, 3.5	1.43, 3.63
Resolution	410, 502 pixels	466, 466 pixels	240, 240 pixels	466, 466 pixels	240, 240 pixels	466, 466 pixels
Panel Type	AMOLED with 190 ppi	AMOLED	IPS LCD	Super AMOLED	Color HD Display (TFT-LCD)	AMOLED
Touch Type	Capacitive multi-touch	Full Capacitive Touch	Capacitive Touchscreen	Full Touch	Full Capacitive Touch	Capacitive Touch
Always-on Display	Yes	Yes	No	Yes	No	—
Brightness	500-600 nits (estimated based on comparable models)	1000 nits (Peak)	5-level adjustable brightness	600 nits	500 nits	Not Specified
Refresh Rate	Standard AMOLED refresh rate	60Hz	Not Specified	60 Hz	60 Hz	Not Specified
Color Gamut / HDR Support	Full color AMOLED display	Not Specified	Not Specified	Not Specified	Standard	—
Screen Protection	Curved tempered glass with anti-fingerprint coating	Flat Curved Glass	Not Specified	2.5D Curved Glass	Flat Toughened Glass	Not Specified
Body
Dimensions	46.9 mm dial size	Standard 46mm dial size	44 x 40 x 13 mm	46 x 46 x 11 mm (Approx)	264.9 x 48.6 x 12.9 mm	Not Specified
Weight	39 grams	60 g	31 grams	56.5 g	Not Specified	117 grams
Case Material	Metal with metallic finish	Stainless Steel / Metal Alloy	Acrylonitrile Butadiene Styrene (ABS) plastic	Zinc Alloy Frame	Rugged Metallic Alloy Middle Frame with Plastic Bottom	Stainless Steel
Front Protection	Curved tempered glass with anti-fingerprint coating	Curved Glass	Not Specified	Glass	Toughened Flat Glass	Not Specified
Strap / Bracelet Options	22mm silicone standard; metal mesh/chain and leather straps available separately	Silicone, Stainless Steel (variant dependent)	Hypoallergenic silicone strap	Silicone, Metallic (variant dependent)	22mm Silicone Strap	Stainless Steel Strap
Removable / Replaceable Strap	Yes	Yes	Not Specified	Yes	Yes	—
Water Resistance	IP68 - Up to 1.5m depth	IP68 Water Resistant	1 ATM (Up to 10m depth splash resistance)	IP67 Water Resistant	IP68 water resistant up to 1.5m for 10 minutes	IP68
Dust Resistance	IP68 certified	IP68 Dust Resistant	Not Specified	IP67 Dust Resistant	Dust proof	Yes (IP68)
Durability Certifications	IP68 water and dust resistance certification	Not Specified	IP Certified	None	IP68 Certified	Not Specified
Primary Controls	Functional rotating crown, side push button, touch screen	Rotating Crown, Touch Screen, Push Button	Touch screen and single physical side button	Touch Screen, Functional Crown, Push Button	Touch Screen, Functional Rotating Crown, Side Buttons	Touch Screen, Functional Crown
Processor
Operating System	Proprietary Noise OS (compatible with iOS 11.0+ and Android 9.0+)	Proprietary RTOS	Proprietary Kids Smartwatch OS	Boult OS (RTOS)	Proprietary RTOS	Compatible with Android & iOS
Chipset / SoC	Not Specified	Single Core Digital Chipset	Not Specified	Single-chip 2-in-1 Bluetooth SoC	Not Specified	Not Specified
CPU Cores & Clock Speed	Not specified	Single Core	Not Specified	Not Specified	Not Specified (Optimized for low power)	Not Specified
GPU	Not Specified	Integrated	—	Not Specified	—	Not Specified
Health & Fitness Sensors
Heart Rate Monitor	Yes - Optical PPG sensor with continuous and manual detection	Optical PPG Sensor	Optical heart rate sensor	24/7 Heart Rate Monitor	Continuous Optical Heart Rate Monitoring	Yes, 24x7 Continuous monitoring
ECG	No ECG support	No	Not Supported	No	Not Available	No
SpO₂ / Blood Oxygen	Yes - Optical SpO2 sensor	Yes	SpO2 Blood Oxygen sensor	SpO2 Sensor	SpO2 Blood Oxygen Monitoring	—
Skin Temperature Sensor	Not available	No	Not Supported	No	Not Available	No
Sleep Tracking	Yes - Detailed sleep stages (Light, Deep, REM)	Yes (Light, Deep, REM)	Monitors sleep duration and quality	Sleep Monitor (Light, Deep, REM)	Sleep Stage Tracking (Light, Deep, REM)	Yes
Step Counter	Yes - Built-in pedometer	Yes	Built-in pedometer	Yes	Integrated Pedometer	Yes
GPS	No built-in GPS - Connected GPS only via smartphone	No (Connected GPS only)	No built-in GPS tracking	Connected GPS	App-Powered GPS Tracking (Connected via Phone)	Connected GPS (via smartphone)
Accelerometer	Yes	Yes	3-axis accelerometer	Yes	Tri-axial Accelerometer	Yes
Gyroscope	Yes	Not Specified	Not Specified	Not Specified	Not Available	Not Specified
Barometer	No	No	Not Supported	No	Not Available	Not Specified
Compass	No	No	Not Supported	No	Not Available	Yes
Other Sensors	Calorie burn estimation, activity history, stress measurement, menstrual cycle tracking, VO2 Max	Sedentary Reminder, Hydration Reminder	Step counter, Calorie tracker, Distance tracker	Blood Pressure (Simulated), Menstrual Cycle Tracker, Breath Training	Stress Monitoring, Female Cycle Tracking	Stress Monitor, Calorie Counter
Connectivity
Wi-Fi	No Wi-Fi support	No	Not Supported	No	No Wi-Fi support	No
Bluetooth	Bluetooth 5.3	Bluetooth 5.0	Bluetooth v5.3	Bluetooth 5.2	Bluetooth version 5.4	Bluetooth 5.3
NFC	No	No	No	No	No	No
Cellular Connectivity	Wi-Fi Only (via smartphone)	No	No Cellular/SIM support	No	None	No (Bluetooth calling only)
ANT+	No	No	No	No	No	No
Battery
Capacity	300 mAh	300 mAh	270 mAh	Not Specified (Approx 250-300mAh)	410 mAh	Approximately 280-300 mAh
Fast Charging Support	No fast charging support	No	Not Specified	No	Full charge in approximately 50 minutes	Yes
Estimated Runtime	Up to 7 days typical use, 30 days standby	Up to 7 Days (Typical)	Up to 3 to 5 days on typical use	Up to 5 Days (Typical)	7-10 days typical; 2-3 days calling	Up to 5 days
Charging Method	Magnetic 2-pin connector	Wireless Magnetic Dock	Magnetic Pogo Pin	Magnetic Charging	USB Magnetic 2-pin Pogo Cable	Magnetic charging cable
Battery Saver Modes	Yes - Screen brightness reduction and selective heart rate monitoring	Power Saver Mode	Scheduled Power Off	Yes	Automatic trigger at 10% battery	Yes, multiple power saving modes available
Memory & Storage
RAM	Not specified	System RAM only	Not Specified	Not Specified	Not Specified	128 MB
Internal Storage	Not specified	No user accessible storage	Not Specified	Not Specified	Flash memory for health data and contacts	Not specified
Expandable Storage	No expandable storage	No	No	No	No	No
Design & Comfort
Bezel Type	Fixed bezel with metallic finish	Fixed with Rotating Crown	Fixed bezel with switchable poppy bumpers	Fixed	Fixed Rugged Bezel	Fixed bezel
Buttons / Crown	Functional mechanical crown + side push button	1 Rotating Crown, 1 Push Button	Single physical side button	Rotating Crown + 1 Button	Functional Rotating Crown and 2 Physical Buttons	Functional Crown (rotatable) + Side button
Vibration Motor	Yes - Haptic feedback vibration alerts	Yes	Built-in vibration for alerts	Yes	Haptic Vibration Motor	Yes
Screen Glass Type	Curved tempered glass	Glass	Not Specified	2.5D Glass	Flat Toughened Glass	Not Specified
Health & Safety Features
Fall Detection / SOS Calling	Yes - SOS technology with emergency calling	No	On-device SOS button and manual emergency contact storage	No	SOS emergency calling via phone	SOS Calling Available
Menstrual Cycle / Health Tracking	Yes - Female health cycle tracker	Yes (Female Health Tracking)	Not Supported	Female Health Tracker	Female Wellness Tracking via App	Not Specified
Noise Monitoring	No	No	No	No	Not Available	Not Specified
Guided Breathing / Mindfulness Features	Yes - Guided breathing practice feature	Breathing Exercises	Not Specified	Breath Training	Guided Breathing / Relax Mode	Stress Tracking Available
Audio & Voice
Built-in Speaker	Yes	Yes	Built-in speaker for alerts and learning audio	Yes	Built-in speaker for Bluetooth calls	Yes
Microphone	Yes - Dual microphone setup	Yes	Built-in microphone for voice notes	Yes	Built-in microphone with ENx Noise Suppression	Yes
Voice Assistant	Yes - AI Voice Assistant with AI Search feature	AI Voice Assistant (Siri/Google via Phone)	No	Yes (AI Voice Assistant)	Siri and Google Assistant supported	AI Voice Assistant
Bluetooth Audio Output	Yes - Bluetooth audio output for music control	Phone Calls Only	No	No	Audio via watch speaker	Yes
Notifications & Controls
Notification Support	Call alerts, SMS/messaging alerts, social media app notifications	Call, SMS, WhatsApp, Social Media	Call alerts, SMS/text alerts, and App notifications	Call, SMS, App Notifications	Alerts for calls, SMS, and app notifications	Yes (all smartphone notifications)
Quick Reply Options	Call rejection available (no voice/text reply)	No	Not Specified	No	Predefined quick reply for calls (Android only)	Limited functionality (depends on phone OS)
Music Control / Playback	Yes - Play/Pause, Next/Previous Track, Volume Control	Music Control (Remote)	Remote music control for paired smartphone	Music Control (Phone)	Remote music control for phone	Yes
Find My Phone	Yes - Find My Phone feature	Yes	Yes	Yes	Available via Bluetooth	Yes
Remote Camera Shutter	Yes - Remote camera control from watch	Yes	Yes	Yes	Remote shutter control for phone	Yes (camera control)
Security
Fingerprint Sensor	No	No	No	No	No	No
Face Unlock	No	No	No	No	No	No
NFC Payment Security	No NFC support - no contactless payments	No	No	No	Not Available	No (no NFC payment support)
Find My Watch	Not confirmed in specifications	Yes (via App)	Yes, via Noise Junior App	Yes (via App)	Available via boAt Crest App	Yes (via companion app)
Ports & Accessories
Charging Connector Type	Magnetic 2-pin proprietary connector	Wireless Charging Dock	Magnetic Pogo Pin	Magnetic Pogo Pin	Magnetic Pogo Pin	Magnetic charging pins
Optional Docks / Stands	Magnetic charging dock available separately	None	Not Specified	None	Not Available	None available
Bundled Extras	User manual, warranty card, charging cable	Charging Cable, Manual	1 Smartwatch, 1 Magnetic Charger, 2 Extra Switchable Bumpers, User Manual, Warranty Card	Charging Cable, User Manual	1 Magnetic Charging Cable	Multiple strap color options available separately
Software & Apps
App Store Availability	NoiseFit App on Google Play Store and Apple App Store	No	No proprietary watch app store	None	No standalone app store	No dedicated app store
Customization Options	100+ cloud-based watch faces + AI Create feature for unlimited AI-powered custom watch face generation	100+ Cloud Watch Faces	100+ Cloud-based watch faces; 3-in-1 look via switchable bumpers	150+ Watch Faces, Menu Styles	100+ Cloud Watch Faces, Customizable Watch Face Studio	100+ watch faces, customizable widgets
Companion App	NoiseFit App (iOS 11.0+ / Android 9.0+)	Fire-Boltt App / Da Fit	Noise Junior App	Boult Fit (GoBoult Fit)	boAt Crest App	Fastrack Smart World App (Android & iOS)
OTA Updates	Yes - OTA updates supported	Yes	Supports over-the-air firmware updates	Yes	Firmware updates via App	Yes (via companion app)
Pre-installed Apps	NoiseFit Health Suite, AI voice assistant, activity tracking, weather app, calculator, stopwatch, timer, alarm, reminder, music control	Alarm, Stopwatch, Timer, Weather, Calculator, Games	Learning Hub (Games, EduCards, Quizzes), Habit Builder, Smart Scheduler, Alarm, Timer, Stopwatch, Weather	Alarm, Stopwatch, Weather, Calculator, Games	100+ Sports Modes, QR Tray, Weather, Calculator, Games	100+ sports modes, health tracking, built-in games, calculator