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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
General
In The Box	Smartwatch, Magnetic Charging Cable, User Manual, Warranty Card	Smartwatch, Wireless Charging Dock, User Manual, Warranty Card
Model Name	ColorFit Pulse 4 Max / NSW-421	Fire-Boltt Axiom
Launch Date	18/07/2024	15/09/2025
Colors	Jet Black, Deep Wine, Rose Gold, Space Blue, Black Link, Calm Silver Link, Silver Link	Black, Silver, Orange, Gold
Brand	Noise	FireBoltt
Display
Display Size	1.96, 4.98	1.43, 3.63
Resolution	410, 502 pixels	466, 466 pixels
Panel Type	AMOLED with 190 ppi	AMOLED
Touch Type	Capacitive multi-touch	Full Capacitive Touch
Always-on Display	Yes	Yes
Brightness	500-600 nits (estimated based on comparable models)	1000 nits (Peak)
Refresh Rate	Standard AMOLED refresh rate	60Hz
Color Gamut / HDR Support	Full color AMOLED display	Not Specified
Screen Protection	Curved tempered glass with anti-fingerprint coating	Flat Curved Glass
Body
Dimensions	46.9 mm dial size	Standard 46mm dial size
Weight	39 grams	60 g
Case Material	Metal with metallic finish	Stainless Steel / Metal Alloy
Front Protection	Curved tempered glass with anti-fingerprint coating	Curved Glass
Strap / Bracelet Options	22mm silicone standard; metal mesh/chain and leather straps available separately	Silicone, Stainless Steel (variant dependent)
Removable / Replaceable Strap	Yes	Yes
Water Resistance	IP68 - Up to 1.5m depth	IP68 Water Resistant
Dust Resistance	IP68 certified	IP68 Dust Resistant
Durability Certifications	IP68 water and dust resistance certification	Not Specified
Primary Controls	Functional rotating crown, side push button, touch screen	Rotating Crown, Touch Screen, Push Button
Processor
Operating System	Proprietary Noise OS (compatible with iOS 11.0+ and Android 9.0+)	Proprietary RTOS
Chipset / SoC	Not Specified	Single Core Digital Chipset
CPU Cores & Clock Speed	Not specified	Single Core
GPU	Not Specified	Integrated
Health & Fitness Sensors
Heart Rate Monitor	Yes - Optical PPG sensor with continuous and manual detection	Optical PPG Sensor
ECG	No ECG support	No
SpO₂ / Blood Oxygen	Yes - Optical SpO2 sensor	Yes
Skin Temperature Sensor	Not available	No
Sleep Tracking	Yes - Detailed sleep stages (Light, Deep, REM)	Yes (Light, Deep, REM)
Step Counter	Yes - Built-in pedometer	Yes
GPS	No built-in GPS - Connected GPS only via smartphone	No (Connected GPS only)
Accelerometer	Yes	Yes
Gyroscope	Yes	Not Specified
Barometer	No	No
Compass	No	No
Other Sensors	Calorie burn estimation, activity history, stress measurement, menstrual cycle tracking, VO2 Max	Sedentary Reminder, Hydration Reminder
Connectivity
Wi-Fi	No Wi-Fi support	No
Bluetooth	Bluetooth 5.3	Bluetooth 5.0
NFC	No	No
Cellular Connectivity	Wi-Fi Only (via smartphone)	No
ANT+	No	No
Battery
Capacity	300 mAh	300 mAh
Fast Charging Support	No fast charging support	No
Estimated Runtime	Up to 7 days typical use, 30 days standby	Up to 7 Days (Typical)
Charging Method	Magnetic 2-pin connector	Wireless Magnetic Dock
Battery Saver Modes	Yes - Screen brightness reduction and selective heart rate monitoring	Power Saver Mode
Memory & Storage
RAM	Not specified	System RAM only
Internal Storage	Not specified	No user accessible storage
Expandable Storage	No expandable storage	No
Design & Comfort
Bezel Type	Fixed bezel with metallic finish	Fixed with Rotating Crown
Buttons / Crown	Functional mechanical crown + side push button	1 Rotating Crown, 1 Push Button
Vibration Motor	Yes - Haptic feedback vibration alerts	Yes
Screen Glass Type	Curved tempered glass	Glass
Health & Safety Features
Fall Detection / SOS Calling	Yes - SOS technology with emergency calling	No
Menstrual Cycle / Health Tracking	Yes - Female health cycle tracker	Yes (Female Health Tracking)
Noise Monitoring	No	No
Guided Breathing / Mindfulness Features	Yes - Guided breathing practice feature	Breathing Exercises
Audio & Voice
Built-in Speaker	Yes	Yes
Microphone	Yes - Dual microphone setup	Yes
Voice Assistant	Yes - AI Voice Assistant with AI Search feature	AI Voice Assistant (Siri/Google via Phone)
Bluetooth Audio Output	Yes - Bluetooth audio output for music control	Phone Calls Only
Notifications & Controls
Notification Support	Call alerts, SMS/messaging alerts, social media app notifications	Call, SMS, WhatsApp, Social Media
Quick Reply Options	Call rejection available (no voice/text reply)	No
Music Control / Playback	Yes - Play/Pause, Next/Previous Track, Volume Control	Music Control (Remote)
Find My Phone	Yes - Find My Phone feature	Yes
Remote Camera Shutter	Yes - Remote camera control from watch	Yes
Security
Fingerprint Sensor	No	No
Face Unlock	No	No
NFC Payment Security	No NFC support - no contactless payments	No
Find My Watch	Not confirmed in specifications	Yes (via App)
Ports & Accessories
Charging Connector Type	Magnetic 2-pin proprietary connector	Wireless Charging Dock
Optional Docks / Stands	Magnetic charging dock available separately	None
Bundled Extras	User manual, warranty card, charging cable	Charging Cable, Manual
Software & Apps
App Store Availability	NoiseFit App on Google Play Store and Apple App Store	No
Customization Options	100+ cloud-based watch faces + AI Create feature for unlimited AI-powered custom watch face generation	100+ Cloud Watch Faces
Companion App	NoiseFit App (iOS 11.0+ / Android 9.0+)	Fire-Boltt App / Da Fit
OTA Updates	Yes - OTA updates supported	Yes
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