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	Realme Watch S2 ₹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	Noise Junior Champ 3 ₹1,999 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	Smartwatch, Charging Cable, User Manual, Silicone Strap	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	ColorFit Pulse 4 Max / NSW-421	Fire-Boltt Axiom	Realme Watch S2	boAt Lunar Atlas	Noise Junior Champ 3	Crown R Pro
Launch Date	18/07/2024	15/09/2025	30/07/2024	06/02/2026	30/09/2025	18/06/2023
Colors	Jet Black, Deep Wine, Rose Gold, Space Blue, Black Link, Calm Silver Link, Silver Link	Black, Silver, Orange, Gold	Midnight Black, Ocean Silver, Metallic Grey	Ranger Black, Phantom Blue	Black Blaze, Astro Orbit, Cotton Cloud, Arctic Storm	Frozen Silver, Thunder Black, Volcanic Orange
Brand	Noise	FireBoltt	Realme	BoAt	Noise	GoBoult
Display
Display Size	1.96, 4.98	1.43, 3.63	1.43, 3.63	1.39, 3.5	1.4, 3.55	1.43, 3.63
Resolution	410, 502 pixels	466, 466 pixels	466, 466 pixels	240, 240 pixels	240, 240 pixels	466, 466 pixels
Panel Type	AMOLED with 190 ppi	AMOLED	AMOLED with 326 ppi density	Color HD Display (TFT-LCD)	IPS LCD	Super AMOLED
Touch Type	Capacitive multi-touch	Full Capacitive Touch	Capacitive multi-touch	Full Capacitive Touch	Capacitive Touchscreen	Full Touch
Always-on Display	Yes	Yes	Yes	No	No	Yes
Brightness	500-600 nits (estimated based on comparable models)	1000 nits (Peak)	600 nits peak brightness	500 nits	5-level adjustable brightness	600 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	Full color AMOLED (HDR not specified)	Standard	Not Specified	Not Specified
Screen Protection	Curved tempered glass with anti-fingerprint coating	Flat Curved Glass	7H scratch-resistant glass with Always-On Display support	Flat Toughened Glass	Not Specified	2.5D Curved Glass
Body
Dimensions	46.9 mm dial size	Standard 46mm dial size	46.5 x 46.5 x 11 mm	264.9 x 48.6 x 12.9 mm	44 x 40 x 13 mm	46 x 46 x 11 mm (Approx)
Weight	39 grams	60 g	41 grams	Not Specified	31 grams	56.5 g
Case Material	Metal with metallic finish	Stainless Steel / Metal Alloy	Zinc Alloy with electroplating and PVD coating	Rugged Metallic Alloy Middle Frame with Plastic Bottom	Acrylonitrile Butadiene Styrene (ABS) plastic	Zinc Alloy Frame
Front Protection	Curved tempered glass with anti-fingerprint coating	Curved Glass	7H Scratch-resistant glass	Toughened Flat Glass	Not Specified	Glass
Strap / Bracelet Options	22mm silicone standard; metal mesh/chain and leather straps available separately	Silicone, Stainless Steel (variant dependent)	Silicone (standard, removable) or Stainless Steel optional bands, 22mm width, 150-230mm length	22mm Silicone Strap	Hypoallergenic silicone strap	Silicone, Metallic (variant dependent)
Removable / Replaceable Strap	Yes	Yes	Yes	Yes	Not Specified	Yes
Water Resistance	IP68 - Up to 1.5m depth	IP68 Water Resistant	IP68 + 5 ATM (up to 5 meters for 30 minutes)	IP68 water resistant up to 1.5m for 10 minutes	1 ATM (Up to 10m depth splash resistance)	IP67 Water Resistant
Dust Resistance	IP68 certified	IP68 Dust Resistant	IP68 dust and water resistant	Dust proof	Not Specified	IP67 Dust Resistant
Durability Certifications	IP68 water and dust resistance certification	Not Specified	IP68 certified, Scratch resistant, Temperature range: -40°C to +70°C	IP68 Certified	IP Certified	None
Primary Controls	Functional rotating crown, side push button, touch screen	Rotating Crown, Touch Screen, Push Button	Crown button on right side + 1 additional button + Capacitive touchscreen	Touch Screen, Functional Rotating Crown, Side Buttons	Touch screen and single physical side button	Touch Screen, Functional Crown, Push Button
Processor
Operating System	Proprietary Noise OS (compatible with iOS 11.0+ and Android 9.0+)	Proprietary RTOS	Proprietary RTOS (Real-Time Operating System)	Proprietary RTOS	Proprietary Kids Smartwatch OS	Boult OS (RTOS)
Chipset / SoC	Not Specified	Single Core Digital Chipset	ATS3085S (Dual-mode Bluetooth processor with MCU + DSP architecture)	Not Specified	Not Specified	Single-chip 2-in-1 Bluetooth SoC
CPU Cores & Clock Speed	Not specified	Single Core	Dual-core MCU + DSP	Not Specified (Optimized for low power)	Not Specified	Not Specified
GPU	Not Specified	Integrated	Not specified	—	—	Not Specified
Health & Fitness Sensors
Heart Rate Monitor	Yes - Optical PPG sensor with continuous and manual detection	Optical PPG Sensor	24/7 continuous monitoring with abnormal HR alert	Continuous Optical Heart Rate Monitoring	Optical heart rate sensor	24/7 Heart Rate Monitor
ECG	No ECG support	No	No ECG support	Not Available	Not Supported	No
SpO₂ / Blood Oxygen	Yes - Optical SpO2 sensor	Yes	24/7 continuous blood oxygen monitoring	SpO2 Blood Oxygen Monitoring	SpO2 Blood Oxygen sensor	SpO2 Sensor
Skin Temperature Sensor	Not available	No	No skin temperature sensor	Not Available	Not Supported	No
Sleep Tracking	Yes - Detailed sleep stages (Light, Deep, REM)	Yes (Light, Deep, REM)	24-hour sleep monitoring with sleep stage analysis (light, deep, REM)	Sleep Stage Tracking (Light, Deep, REM)	Monitors sleep duration and quality	Sleep Monitor (Light, Deep, REM)
Step Counter	Yes - Built-in pedometer	Yes	Yes - pedometer with step count tracking	Integrated Pedometer	Built-in pedometer	Yes
GPS	No built-in GPS - Connected GPS only via smartphone	No (Connected GPS only)	No GPS (no built-in or connected GPS)	App-Powered GPS Tracking (Connected via Phone)	No built-in GPS tracking	Connected GPS
Accelerometer	Yes	Yes	Yes - 3-axis accelerometer	Tri-axial Accelerometer	3-axis accelerometer	Yes
Gyroscope	Yes	Not Specified	Yes - gyroscope sensor	Not Available	Not Specified	Not Specified
Barometer	No	No	Yes - barometer for altitude tracking	Not Available	Not Supported	No
Compass	No	No	Yes - compass sensor	Not Available	Not Supported	No
Other Sensors	Calorie burn estimation, activity history, stress measurement, menstrual cycle tracking, VO2 Max	Sedentary Reminder, Hydration Reminder	Ambient light sensor, altimeter, stress monitor (HRV-based), menstrual cycle tracker	Stress Monitoring, Female Cycle Tracking	Step counter, Calorie tracker, Distance tracker	Blood Pressure (Simulated), Menstrual Cycle Tracker, Breath Training
Connectivity
Wi-Fi	No Wi-Fi support	No	No Wi-Fi	No Wi-Fi support	Not Supported	No
Bluetooth	Bluetooth 5.3	Bluetooth 5.0	Bluetooth 5.3 with 10-meter connectivity range	Bluetooth version 5.4	Bluetooth v5.3	Bluetooth 5.2
NFC	No	No	No	No	No	No
Cellular Connectivity	Wi-Fi Only (via smartphone)	No	Bluetooth only (no cellular, Wi-Fi, or satellite)	None	No Cellular/SIM support	No
ANT+	No	No	No	No	No	No
Battery
Capacity	300 mAh	300 mAh	380 mAh Li-ion non-removable	410 mAh	270 mAh	Not Specified (Approx 250-300mAh)
Fast Charging Support	No fast charging support	No	Yes - approximately 60 minutes for full charge	Full charge in approximately 50 minutes	Not Specified	No
Estimated Runtime	Up to 7 days typical use, 30 days standby	Up to 7 Days (Typical)	14 days typical use, 20 days with custom battery mode, 5 days with Always-On Display, 38 days standby	7-10 days typical; 2-3 days calling	Up to 3 to 5 days on typical use	Up to 5 Days (Typical)
Charging Method	Magnetic 2-pin connector	Wireless Magnetic Dock	Magnetic dock/wired connector	USB Magnetic 2-pin Pogo Cable	Magnetic Pogo Pin	Magnetic Charging
Battery Saver Modes	Yes - Screen brightness reduction and selective heart rate monitoring	Power Saver Mode	Customizable ultra-long battery mode, AI-optimized battery mode, time-only mode	Automatic trigger at 10% battery	Scheduled Power Off	Yes
Memory & Storage
RAM	Not specified	System RAM only	8 MB PSRAM	Not Specified	Not Specified	Not Specified
Internal Storage	Not specified	No user accessible storage	4 GB Flash (500 MB user-accessible for music)	Flash memory for health data and contacts	Not Specified	Not Specified
Expandable Storage	No expandable storage	No	No microSD card slot	No	No	No
Design & Comfort
Bezel Type	Fixed bezel with metallic finish	Fixed with Rotating Crown	Fixed circular bezel with watch-inspired design	Fixed Rugged Bezel	Fixed bezel with switchable poppy bumpers	Fixed
Buttons / Crown	Functional mechanical crown + side push button	1 Rotating Crown, 1 Push Button	1 rotating crown button on right side + 1 additional action button	Functional Rotating Crown and 2 Physical Buttons	Single physical side button	Rotating Crown + 1 Button
Vibration Motor	Yes - Haptic feedback vibration alerts	Yes	Yes - haptic vibration motor	Haptic Vibration Motor	Built-in vibration for alerts	Yes
Screen Glass Type	Curved tempered glass	Glass	7H scratch-resistant mineral glass	Flat Toughened Glass	Not Specified	2.5D Glass
Health & Safety Features
Fall Detection / SOS Calling	Yes - SOS technology with emergency calling	No	No fall detection or emergency SOS calling	SOS emergency calling via phone	On-device SOS button and manual emergency contact storage	No
Menstrual Cycle / Health Tracking	Yes - Female health cycle tracker	Yes (Female Health Tracking)	Yes - menstrual cycle tracking with prediction and period reminder	Female Wellness Tracking via App	Not Supported	Female Health Tracker
Noise Monitoring	No	No	Ambient volume monitoring (no formal noise exposure detection)	Not Available	No	No
Guided Breathing / Mindfulness Features	Yes - Guided breathing practice feature	Breathing Exercises	Yes - guided breathing exercises and mindfulness reminders via Realme Link app	Guided Breathing / Relax Mode	Not Specified	Breath Training
Audio & Voice
Built-in Speaker	Yes	Yes	Yes - up to 90 dB speaker with 10-meter microphone pickup in quiet environments	Built-in speaker for Bluetooth calls	Built-in speaker for alerts and learning audio	Yes
Microphone	Yes - Dual microphone setup	Yes	Yes - high-performance microphone for Bluetooth calling	Built-in microphone with ENx Noise Suppression	Built-in microphone for voice notes	Yes
Voice Assistant	Yes - AI Voice Assistant with AI Search feature	AI Voice Assistant (Siri/Google via Phone)	Yes - ChatGPT 3.5 powered AI assistant with voice-controlled watch face generation	Siri and Google Assistant supported	No	Yes (AI Voice Assistant)
Bluetooth Audio Output	Yes - Bluetooth audio output for music control	Phone Calls Only	Yes - supports Bluetooth audio playback and streaming	Audio via watch speaker	No	No
Notifications & Controls
Notification Support	Call alerts, SMS/messaging alerts, social media app notifications	Call, SMS, WhatsApp, Social Media	Call alerts, SMS/messaging alerts, app notifications, rich notifications	Alerts for calls, SMS, and app notifications	Call alerts, SMS/text alerts, and App notifications	Call, SMS, App Notifications
Quick Reply Options	Call rejection available (no voice/text reply)	No	Predefined messages only (no voice or custom text reply on watch)	Predefined quick reply for calls (Android only)	Not Specified	No
Music Control / Playback	Yes - Play/Pause, Next/Previous Track, Volume Control	Music Control (Remote)	Play/Pause, Next/Previous track, Volume control, Local MP3 storage playback	Remote music control for phone	Remote music control for paired smartphone	Music Control (Phone)
Find My Phone	Yes - Find My Phone feature	Yes	Yes - Find My Phone feature via Realme Link app	Available via Bluetooth	Yes	Yes
Remote Camera Shutter	Yes - Remote camera control from watch	Yes	Yes - remote camera shutter control	Remote shutter control for phone	Yes	Yes
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 NFC payment capability	Not Available	No	No
Find My Watch	Not confirmed in specifications	Yes (via App)	Not officially specified	Available via boAt Crest App	Yes, via Noise Junior App	Yes (via App)
Ports & Accessories
Charging Connector Type	Magnetic 2-pin proprietary connector	Wireless Charging Dock	Proprietary magnetic dock connector	Magnetic Pogo Pin	Magnetic Pogo Pin	Magnetic Pogo Pin
Optional Docks / Stands	Magnetic charging dock available separately	None	N/A	Not Available	Not Specified	None
Bundled Extras	User manual, warranty card, charging cable	Charging Cable, Manual	Smartwatch, Charging Cable, User Manual, Silicone Strap; Extra straps available in multiple colors (sold separately)	1 Magnetic Charging Cable	1 Smartwatch, 1 Magnetic Charger, 2 Extra Switchable Bumpers, User Manual, Warranty Card	Charging Cable, User Manual
Software & Apps
App Store Availability	NoiseFit App on Google Play Store and Apple App Store	No	Realme Link app - available on Google Play Store and Apple App Store	No standalone app store	No proprietary watch 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	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+ Cloud Watch Faces, Customizable Watch Face Studio	100+ Cloud-based watch faces; 3-in-1 look via switchable bumpers	150+ Watch Faces, Menu Styles
Companion App	NoiseFit App (iOS 11.0+ / Android 9.0+)	Fire-Boltt App / Da Fit	Realme Link (Android & iOS compatible)	boAt Crest App	Noise Junior App	Boult Fit (GoBoult Fit)
OTA Updates	Yes - OTA updates supported	Yes	Yes - Over-the-Air updates supported	Firmware updates via App	Supports over-the-air firmware updates	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	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, QR Tray, Weather, Calculator, Games	Learning Hub (Games, EduCards, Quizzes), Habit Builder, Smart Scheduler, Alarm, Timer, Stopwatch, Weather	Alarm, Stopwatch, Weather, Calculator, Games