Compare Products Side-by-Side

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	Fastrack Astor FR2 Pro ₹2,799 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	Boult Crown R Pro ₹1,999 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	Smart Watch, Magnetic Charging Cable, User Manual, Warranty Card	Smartwatch, Charging Cable, User Manual, Silicone Strap	Smartwatch, Magnetic Charging Cable, User Manual, Warranty Card
Model Name	ColorFit Pulse 4 Max / NSW-421	Fire-Boltt Axiom	Fastrack Astor FR2 Pro	Realme Watch S2	Crown R Pro
Launch Date	18/07/2024	15/09/2025	15/09/2024	30/07/2024	18/06/2023
Colors	Jet Black, Deep Wine, Rose Gold, Space Blue, Black Link, Calm Silver Link, Silver Link	Black, Silver, Orange, Gold	Black, Silver, Rose Gold, Grey	Midnight Black, Ocean Silver, Metallic Grey	Frozen Silver, Thunder Black, Volcanic Orange
Brand	Noise	FireBoltt	Fastrack	Realme	GoBoult
Display
Display Size	1.96, 4.98	1.43, 3.63	1.43, 3.63	1.43, 3.63	1.43, 3.63
Resolution	410, 502 pixels	466, 466 pixels	466, 466 pixels	466, 466 pixels	466, 466 pixels
Panel Type	AMOLED with 190 ppi	AMOLED	AMOLED	AMOLED with 326 ppi density	Super AMOLED
Touch Type	Capacitive multi-touch	Full Capacitive Touch	Capacitive Touch	Capacitive multi-touch	Full Touch
Always-on Display	Yes	Yes	—	Yes	Yes
Brightness	500-600 nits (estimated based on comparable models)	1000 nits (Peak)	Not Specified	600 nits peak brightness	600 nits
Refresh Rate	Standard AMOLED refresh rate	60Hz	Not Specified	60 Hz	60 Hz
Color Gamut / HDR Support	Full color AMOLED display	Not Specified	—	Full color AMOLED (HDR not specified)	Not Specified
Screen Protection	Curved tempered glass with anti-fingerprint coating	Flat Curved Glass	Not Specified	7H scratch-resistant glass with Always-On Display support	2.5D Curved Glass
Body
Dimensions	46.9 mm dial size	Standard 46mm dial size	Not Specified	46.5 x 46.5 x 11 mm	46 x 46 x 11 mm (Approx)
Weight	39 grams	60 g	117 grams	41 grams	56.5 g
Case Material	Metal with metallic finish	Stainless Steel / Metal Alloy	Stainless Steel	Zinc Alloy with electroplating and PVD coating	Zinc Alloy Frame
Front Protection	Curved tempered glass with anti-fingerprint coating	Curved Glass	Not Specified	7H Scratch-resistant glass	Glass
Strap / Bracelet Options	22mm silicone standard; metal mesh/chain and leather straps available separately	Silicone, Stainless Steel (variant dependent)	Stainless Steel Strap	Silicone (standard, removable) or Stainless Steel optional bands, 22mm width, 150-230mm length	Silicone, Metallic (variant dependent)
Removable / Replaceable Strap	Yes	Yes	—	Yes	Yes
Water Resistance	IP68 - Up to 1.5m depth	IP68 Water Resistant	IP68	IP68 + 5 ATM (up to 5 meters for 30 minutes)	IP67 Water Resistant
Dust Resistance	IP68 certified	IP68 Dust Resistant	Yes (IP68)	IP68 dust and water resistant	IP67 Dust Resistant
Durability Certifications	IP68 water and dust resistance certification	Not Specified	Not Specified	IP68 certified, Scratch resistant, Temperature range: -40°C to +70°C	None
Primary Controls	Functional rotating crown, side push button, touch screen	Rotating Crown, Touch Screen, Push Button	Touch Screen, Functional Crown	Crown button on right side + 1 additional button + Capacitive touchscreen	Touch Screen, Functional Crown, Push Button
Processor
Operating System	Proprietary Noise OS (compatible with iOS 11.0+ and Android 9.0+)	Proprietary RTOS	Compatible with Android & iOS	Proprietary RTOS (Real-Time Operating System)	Boult OS (RTOS)
Chipset / SoC	Not Specified	Single Core Digital Chipset	Not Specified	ATS3085S (Dual-mode Bluetooth processor with MCU + DSP architecture)	Single-chip 2-in-1 Bluetooth SoC
CPU Cores & Clock Speed	Not specified	Single Core	Not Specified	Dual-core MCU + DSP	Not Specified
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	Yes, 24x7 Continuous monitoring	24/7 continuous monitoring with abnormal HR alert	24/7 Heart Rate Monitor
ECG	No ECG support	No	No	No ECG support	No
SpO₂ / Blood Oxygen	Yes - Optical SpO2 sensor	Yes	—	24/7 continuous blood oxygen monitoring	SpO2 Sensor
Skin Temperature Sensor	Not available	No	No	No skin temperature sensor	No
Sleep Tracking	Yes - Detailed sleep stages (Light, Deep, REM)	Yes (Light, Deep, REM)	Yes	24-hour sleep monitoring with sleep stage analysis (light, deep, REM)	Sleep Monitor (Light, Deep, REM)
Step Counter	Yes - Built-in pedometer	Yes	Yes	Yes - pedometer with step count tracking	Yes
GPS	No built-in GPS - Connected GPS only via smartphone	No (Connected GPS only)	Connected GPS (via smartphone)	No GPS (no built-in or connected GPS)	Connected GPS
Accelerometer	Yes	Yes	Yes	Yes - 3-axis accelerometer	Yes
Gyroscope	Yes	Not Specified	Not Specified	Yes - gyroscope sensor	Not Specified
Barometer	No	No	Not Specified	Yes - barometer for altitude tracking	No
Compass	No	No	Yes	Yes - compass sensor	No
Other Sensors	Calorie burn estimation, activity history, stress measurement, menstrual cycle tracking, VO2 Max	Sedentary Reminder, Hydration Reminder	Stress Monitor, Calorie Counter	Ambient light sensor, altimeter, stress monitor (HRV-based), menstrual cycle tracker	Blood Pressure (Simulated), Menstrual Cycle Tracker, Breath Training
Connectivity
Wi-Fi	No Wi-Fi support	No	No	No Wi-Fi	No
Bluetooth	Bluetooth 5.3	Bluetooth 5.0	Bluetooth 5.3	Bluetooth 5.3 with 10-meter connectivity range	Bluetooth 5.2
NFC	No	No	No	No	No
Cellular Connectivity	Wi-Fi Only (via smartphone)	No	No (Bluetooth calling only)	Bluetooth only (no cellular, Wi-Fi, or satellite)	No
ANT+	No	No	No	No	No
Battery
Capacity	300 mAh	300 mAh	Approximately 280-300 mAh	380 mAh Li-ion non-removable	Not Specified (Approx 250-300mAh)
Fast Charging Support	No fast charging support	No	Yes	Yes - approximately 60 minutes for full charge	No
Estimated Runtime	Up to 7 days typical use, 30 days standby	Up to 7 Days (Typical)	Up to 5 days	14 days typical use, 20 days with custom battery mode, 5 days with Always-On Display, 38 days standby	Up to 5 Days (Typical)
Charging Method	Magnetic 2-pin connector	Wireless Magnetic Dock	Magnetic charging cable	Magnetic dock/wired connector	Magnetic Charging
Battery Saver Modes	Yes - Screen brightness reduction and selective heart rate monitoring	Power Saver Mode	Yes, multiple power saving modes available	Customizable ultra-long battery mode, AI-optimized battery mode, time-only mode	Yes
Memory & Storage
RAM	Not specified	System RAM only	128 MB	8 MB PSRAM	Not Specified
Internal Storage	Not specified	No user accessible storage	Not specified	4 GB Flash (500 MB user-accessible for music)	Not Specified
Expandable Storage	No expandable storage	No	No	No microSD card slot	No
Design & Comfort
Bezel Type	Fixed bezel with metallic finish	Fixed with Rotating Crown	Fixed bezel	Fixed circular bezel with watch-inspired design	Fixed
Buttons / Crown	Functional mechanical crown + side push button	1 Rotating Crown, 1 Push Button	Functional Crown (rotatable) + Side button	1 rotating crown button on right side + 1 additional action button	Rotating Crown + 1 Button
Vibration Motor	Yes - Haptic feedback vibration alerts	Yes	Yes	Yes - haptic vibration motor	Yes
Screen Glass Type	Curved tempered glass	Glass	Not Specified	7H scratch-resistant mineral glass	2.5D Glass
Health & Safety Features
Fall Detection / SOS Calling	Yes - SOS technology with emergency calling	No	SOS Calling Available	No fall detection or emergency SOS calling	No
Menstrual Cycle / Health Tracking	Yes - Female health cycle tracker	Yes (Female Health Tracking)	Not Specified	Yes - menstrual cycle tracking with prediction and period reminder	Female Health Tracker
Noise Monitoring	No	No	Not Specified	Ambient volume monitoring (no formal noise exposure detection)	No
Guided Breathing / Mindfulness Features	Yes - Guided breathing practice feature	Breathing Exercises	Stress Tracking Available	Yes - guided breathing exercises and mindfulness reminders via Realme Link app	Breath Training
Audio & Voice
Built-in Speaker	Yes	Yes	Yes	Yes - up to 90 dB speaker with 10-meter microphone pickup in quiet environments	Yes
Microphone	Yes - Dual microphone setup	Yes	Yes	Yes - high-performance microphone for Bluetooth calling	Yes
Voice Assistant	Yes - AI Voice Assistant with AI Search feature	AI Voice Assistant (Siri/Google via Phone)	AI Voice Assistant	Yes - ChatGPT 3.5 powered AI assistant with voice-controlled watch face generation	Yes (AI Voice Assistant)
Bluetooth Audio Output	Yes - Bluetooth audio output for music control	Phone Calls Only	Yes	Yes - supports Bluetooth audio playback and streaming	No
Notifications & Controls
Notification Support	Call alerts, SMS/messaging alerts, social media app notifications	Call, SMS, WhatsApp, Social Media	Yes (all smartphone notifications)	Call alerts, SMS/messaging alerts, app notifications, rich notifications	Call, SMS, App Notifications
Quick Reply Options	Call rejection available (no voice/text reply)	No	Limited functionality (depends on phone OS)	Predefined messages only (no voice or custom text reply on watch)	No
Music Control / Playback	Yes - Play/Pause, Next/Previous Track, Volume Control	Music Control (Remote)	Yes	Play/Pause, Next/Previous track, Volume control, Local MP3 storage playback	Music Control (Phone)
Find My Phone	Yes - Find My Phone feature	Yes	Yes	Yes - Find My Phone feature via Realme Link app	Yes
Remote Camera Shutter	Yes - Remote camera control from watch	Yes	Yes (camera control)	Yes - remote camera shutter control	Yes
Security
Fingerprint Sensor	No	No	No	No	No
Face Unlock	No	No	No	No	No
NFC Payment Security	No NFC support - no contactless payments	No	No (no NFC payment support)	No NFC payment capability	No
Find My Watch	Not confirmed in specifications	Yes (via App)	Yes (via companion app)	Not officially specified	Yes (via App)
Ports & Accessories
Charging Connector Type	Magnetic 2-pin proprietary connector	Wireless Charging Dock	Magnetic charging pins	Proprietary magnetic dock connector	Magnetic Pogo Pin
Optional Docks / Stands	Magnetic charging dock available separately	None	None available	N/A	None
Bundled Extras	User manual, warranty card, charging cable	Charging Cable, Manual	Multiple strap color options available separately	Smartwatch, Charging Cable, User Manual, Silicone Strap; Extra straps available in multiple colors (sold separately)	Charging Cable, User Manual
Software & Apps
App Store Availability	NoiseFit App on Google Play Store and Apple App Store	No	No dedicated app store	Realme Link app - available on Google Play Store and Apple App Store	None
Customization Options	100+ cloud-based watch faces + AI Create feature for unlimited AI-powered custom watch face generation	100+ Cloud Watch Faces	100+ watch faces, customizable widgets	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	150+ Watch Faces, Menu Styles
Companion App	NoiseFit App (iOS 11.0+ / Android 9.0+)	Fire-Boltt App / Da Fit	Fastrack Smart World App (Android & iOS)	Realme Link (Android & iOS compatible)	Boult Fit (GoBoult Fit)
OTA Updates	Yes - OTA updates supported	Yes	Yes (via companion app)	Yes - Over-the-Air 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	100+ sports modes, health tracking, built-in games, calculator	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	Alarm, Stopwatch, Weather, Calculator, Games