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