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