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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	Realme Watch S2 ₹2,799 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	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	Smartwatch, Charging Cable, User Manual, Silicone Strap	Smart Watch, 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	Realme Watch S2	Fastrack Astor FR2 Pro	boAt Lunar Atlas
Launch Date	18/07/2024	15/09/2025	18/06/2023	30/07/2024	15/09/2024	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	Midnight Black, Ocean Silver, Metallic Grey	Black, Silver, Rose Gold, Grey	Ranger Black, Phantom Blue
Brand	Noise	FireBoltt	GoBoult	Realme	Fastrack	BoAt
Display
Display Size	1.96, 4.98	1.43, 3.63	1.43, 3.63	1.43, 3.63	1.43, 3.63	1.39, 3.5
Resolution	410, 502 pixels	466, 466 pixels	466, 466 pixels	466, 466 pixels	466, 466 pixels	240, 240 pixels
Panel Type	AMOLED with 190 ppi	AMOLED	Super AMOLED	AMOLED with 326 ppi density	AMOLED	Color HD Display (TFT-LCD)
Touch Type	Capacitive multi-touch	Full Capacitive Touch	Full Touch	Capacitive multi-touch	Capacitive Touch	Full Capacitive Touch
Always-on Display	Yes	Yes	Yes	Yes	—	No
Brightness	500-600 nits (estimated based on comparable models)	1000 nits (Peak)	600 nits	600 nits peak brightness	Not Specified	500 nits
Refresh Rate	Standard AMOLED refresh rate	60Hz	60 Hz	60 Hz	Not Specified	60 Hz
Color Gamut / HDR Support	Full color AMOLED display	Not Specified	Not Specified	Full color AMOLED (HDR not specified)	—	Standard
Screen Protection	Curved tempered glass with anti-fingerprint coating	Flat Curved Glass	2.5D Curved Glass	7H scratch-resistant glass with Always-On Display support	Not Specified	Flat Toughened Glass
Body
Dimensions	46.9 mm dial size	Standard 46mm dial size	46 x 46 x 11 mm (Approx)	46.5 x 46.5 x 11 mm	Not Specified	264.9 x 48.6 x 12.9 mm
Weight	39 grams	60 g	56.5 g	41 grams	117 grams	Not Specified
Case Material	Metal with metallic finish	Stainless Steel / Metal Alloy	Zinc Alloy Frame	Zinc Alloy with electroplating and PVD coating	Stainless Steel	Rugged Metallic Alloy Middle Frame with Plastic Bottom
Front Protection	Curved tempered glass with anti-fingerprint coating	Curved Glass	Glass	7H Scratch-resistant glass	Not Specified	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)	Silicone (standard, removable) or Stainless Steel optional bands, 22mm width, 150-230mm length	Stainless Steel Strap	22mm Silicone Strap
Removable / Replaceable Strap	Yes	Yes	Yes	Yes	—	Yes
Water Resistance	IP68 - Up to 1.5m depth	IP68 Water Resistant	IP67 Water Resistant	IP68 + 5 ATM (up to 5 meters for 30 minutes)	IP68	IP68 water resistant up to 1.5m for 10 minutes
Dust Resistance	IP68 certified	IP68 Dust Resistant	IP67 Dust Resistant	IP68 dust and water resistant	Yes (IP68)	Dust proof
Durability Certifications	IP68 water and dust resistance certification	Not Specified	None	IP68 certified, Scratch resistant, Temperature range: -40°C to +70°C	Not Specified	IP68 Certified
Primary Controls	Functional rotating crown, side push button, touch screen	Rotating Crown, Touch Screen, Push Button	Touch Screen, Functional Crown, Push Button	Crown button on right side + 1 additional button + Capacitive touchscreen	Touch Screen, Functional Crown	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 (Real-Time Operating System)	Compatible with Android & iOS	Proprietary RTOS
Chipset / SoC	Not Specified	Single Core Digital Chipset	Single-chip 2-in-1 Bluetooth SoC	ATS3085S (Dual-mode Bluetooth processor with MCU + DSP architecture)	Not Specified	Not Specified
CPU Cores & Clock Speed	Not specified	Single Core	Not Specified	Dual-core MCU + DSP	Not Specified	Not Specified (Optimized for low power)
GPU	Not Specified	Integrated	Not Specified	Not specified	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	24/7 continuous monitoring with abnormal HR alert	Yes, 24x7 Continuous monitoring	Continuous Optical Heart Rate Monitoring
ECG	No ECG support	No	No	No ECG support	No	Not Available
SpO₂ / Blood Oxygen	Yes - Optical SpO2 sensor	Yes	SpO2 Sensor	24/7 continuous blood oxygen monitoring	—	SpO2 Blood Oxygen Monitoring
Skin Temperature Sensor	Not available	No	No	No skin temperature sensor	No	Not Available
Sleep Tracking	Yes - Detailed sleep stages (Light, Deep, REM)	Yes (Light, Deep, REM)	Sleep Monitor (Light, Deep, REM)	24-hour sleep monitoring with sleep stage analysis (light, deep, REM)	Yes	Sleep Stage Tracking (Light, Deep, REM)
Step Counter	Yes - Built-in pedometer	Yes	Yes	Yes - pedometer with step count tracking	Yes	Integrated Pedometer
GPS	No built-in GPS - Connected GPS only via smartphone	No (Connected GPS only)	Connected GPS	No GPS (no built-in or connected GPS)	Connected GPS (via smartphone)	App-Powered GPS Tracking (Connected via Phone)
Accelerometer	Yes	Yes	Yes	Yes - 3-axis accelerometer	Yes	Tri-axial Accelerometer
Gyroscope	Yes	Not Specified	Not Specified	Yes - gyroscope sensor	Not Specified	Not Available
Barometer	No	No	No	Yes - barometer for altitude tracking	Not Specified	Not Available
Compass	No	No	No	Yes - compass sensor	Yes	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	Ambient light sensor, altimeter, stress monitor (HRV-based), menstrual cycle tracker	Stress Monitor, Calorie Counter	Stress Monitoring, Female Cycle Tracking
Connectivity
Wi-Fi	No Wi-Fi support	No	No	No Wi-Fi	No	No Wi-Fi support
Bluetooth	Bluetooth 5.3	Bluetooth 5.0	Bluetooth 5.2	Bluetooth 5.3 with 10-meter connectivity range	Bluetooth 5.3	Bluetooth version 5.4
NFC	No	No	No	No	No	No
Cellular Connectivity	Wi-Fi Only (via smartphone)	No	No	Bluetooth only (no cellular, Wi-Fi, or satellite)	No (Bluetooth calling only)	None
ANT+	No	No	No	No	No	No
Battery
Capacity	300 mAh	300 mAh	Not Specified (Approx 250-300mAh)	380 mAh Li-ion non-removable	Approximately 280-300 mAh	410 mAh
Fast Charging Support	No fast charging support	No	No	Yes - approximately 60 minutes for full charge	Yes	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)	14 days typical use, 20 days with custom battery mode, 5 days with Always-On Display, 38 days standby	Up to 5 days	7-10 days typical; 2-3 days calling
Charging Method	Magnetic 2-pin connector	Wireless Magnetic Dock	Magnetic Charging	Magnetic dock/wired connector	Magnetic charging cable	USB Magnetic 2-pin Pogo Cable
Battery Saver Modes	Yes - Screen brightness reduction and selective heart rate monitoring	Power Saver Mode	Yes	Customizable ultra-long battery mode, AI-optimized battery mode, time-only mode	Yes, multiple power saving modes available	Automatic trigger at 10% battery
Memory & Storage
RAM	Not specified	System RAM only	Not Specified	8 MB PSRAM	128 MB	Not Specified
Internal Storage	Not specified	No user accessible storage	Not Specified	4 GB Flash (500 MB user-accessible for music)	Not specified	Flash memory for health data and contacts
Expandable Storage	No expandable storage	No	No	No microSD card slot	No	No
Design & Comfort
Bezel Type	Fixed bezel with metallic finish	Fixed with Rotating Crown	Fixed	Fixed circular bezel with watch-inspired design	Fixed bezel	Fixed Rugged Bezel
Buttons / Crown	Functional mechanical crown + side push button	1 Rotating Crown, 1 Push Button	Rotating Crown + 1 Button	1 rotating crown button on right side + 1 additional action button	Functional Crown (rotatable) + Side button	Functional Rotating Crown and 2 Physical Buttons
Vibration Motor	Yes - Haptic feedback vibration alerts	Yes	Yes	Yes - haptic vibration motor	Yes	Haptic Vibration Motor
Screen Glass Type	Curved tempered glass	Glass	2.5D Glass	7H scratch-resistant mineral glass	Not Specified	Flat Toughened Glass
Health & Safety Features
Fall Detection / SOS Calling	Yes - SOS technology with emergency calling	No	No	No fall detection or emergency SOS calling	SOS Calling Available	SOS emergency calling via phone
Menstrual Cycle / Health Tracking	Yes - Female health cycle tracker	Yes (Female Health Tracking)	Female Health Tracker	Yes - menstrual cycle tracking with prediction and period reminder	Not Specified	Female Wellness Tracking via App
Noise Monitoring	No	No	No	Ambient volume monitoring (no formal noise exposure detection)	Not Specified	Not Available
Guided Breathing / Mindfulness Features	Yes - Guided breathing practice feature	Breathing Exercises	Breath Training	Yes - guided breathing exercises and mindfulness reminders via Realme Link app	Stress Tracking Available	Guided Breathing / Relax Mode
Audio & Voice
Built-in Speaker	Yes	Yes	Yes	Yes - up to 90 dB speaker with 10-meter microphone pickup in quiet environments	Yes	Built-in speaker for Bluetooth calls
Microphone	Yes - Dual microphone setup	Yes	Yes	Yes - high-performance microphone for Bluetooth calling	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)	Yes - ChatGPT 3.5 powered AI assistant with voice-controlled watch face generation	AI Voice Assistant	Siri and Google Assistant supported
Bluetooth Audio Output	Yes - Bluetooth audio output for music control	Phone Calls Only	No	Yes - supports Bluetooth audio playback and streaming	Yes	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	Call alerts, SMS/messaging alerts, app notifications, rich notifications	Yes (all smartphone notifications)	Alerts for calls, SMS, and app notifications
Quick Reply Options	Call rejection available (no voice/text reply)	No	No	Predefined messages only (no voice or custom text reply on watch)	Limited functionality (depends on phone OS)	Predefined quick reply for calls (Android only)
Music Control / Playback	Yes - Play/Pause, Next/Previous Track, Volume Control	Music Control (Remote)	Music Control (Phone)	Play/Pause, Next/Previous track, Volume control, Local MP3 storage playback	Yes	Remote music control for phone
Find My Phone	Yes - Find My Phone feature	Yes	Yes	Yes - Find My Phone feature via Realme Link app	Yes	Available via Bluetooth
Remote Camera Shutter	Yes - Remote camera control from watch	Yes	Yes	Yes - remote camera shutter control	Yes (camera control)	Remote shutter control for phone
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 NFC payment capability	No (no NFC payment support)	Not Available
Find My Watch	Not confirmed in specifications	Yes (via App)	Yes (via App)	Not officially specified	Yes (via companion app)	Available via boAt Crest App
Ports & Accessories
Charging Connector Type	Magnetic 2-pin proprietary connector	Wireless Charging Dock	Magnetic Pogo Pin	Proprietary magnetic dock connector	Magnetic charging pins	Magnetic Pogo Pin
Optional Docks / Stands	Magnetic charging dock available separately	None	None	N/A	None available	Not Available
Bundled Extras	User manual, warranty card, charging cable	Charging Cable, Manual	Charging Cable, User Manual	Smartwatch, Charging Cable, User Manual, Silicone Strap; Extra straps available in multiple colors (sold separately)	Multiple strap color options available separately	1 Magnetic Charging Cable
Software & Apps
App Store Availability	NoiseFit App on Google Play Store and Apple App Store	No	None	Realme Link app - available on Google Play Store and Apple App Store	No dedicated app store	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	150+ cloud-based watch faces, AI-generated custom watch faces via voice commands, 110+ pre-loaded sports modes (expandable to 130+), customizable tiles and quick access shortcuts	100+ watch faces, customizable widgets	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)	Realme Link (Android & iOS compatible)	Fastrack Smart World App (Android & iOS)	boAt Crest App
OTA Updates	Yes - OTA updates supported	Yes	Yes	Yes - Over-the-Air updates supported	Yes (via companion app)	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	ChatGPT 3.5 assistant, 110+ sports modes with auto-recognition, 150+ watch face library, health monitoring apps (HR, SpO2, sleep, stress tracking), Realme Link companion app	100+ sports modes, health tracking, built-in games, calculator	100+ Sports Modes, QR Tray, Weather, Calculator, Games