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Detailed side-by-side comparison of specifications, features and latest prices in India.

Specification	Noise Junior Champ 3 ₹1,999 Prices and availability may change on the seller's site View Price	Fire-Boltt Axiom ₹1,999 Prices and availability may change on the seller's site View Price	Noise Twist Go ₹1,599 Prices and availability may change on the seller's site View Price	Noise ColorFit Pulse 4 Max ₹1,899 Prices and availability may change on the seller's site View Price	Noise Twist Round dial ₹1,599 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, Magnetic Charging Cable, User Manual, Warranty Card	Smartwatch, Magnetic Charging Cable, User Manual, Warranty Card
Model Name	Noise Junior Champ 3	Fire-Boltt Axiom	NoiseFit Twist Go	ColorFit Pulse 4 Max / NSW-421	NoiseFit Twist
Launch Date	30/09/2025	15/09/2025	31/10/2023	18/07/2024	12/01/2023
Colors	Black Blaze, Astro Orbit, Cotton Cloud, Arctic Storm	Black, Silver, Orange, Gold	Jet Black, Silver Grey, Rose Pink, Gold Link, Silver Link, Elite Black, Rose Wine	Jet Black, Deep Wine, Rose Gold, Space Blue, Black Link, Calm Silver Link, Silver Link	Jet Black, Silver Grey, Rose Wine, Rose Pink, Space Blue
Brand	Noise	FireBoltt	Noise	Noise	Noise
Display
Display Size	1.4, 3.55	1.43, 3.63	1.39, 3.53	1.96, 4.98	1.38, 3.5
Resolution	240, 240 pixels	466, 466 pixels	240, 240 pixels	410, 502 pixels	240, 240 pixels
Panel Type	IPS LCD	AMOLED	TFT LCD	AMOLED with 190 ppi	TFT LCD with 246 PPI pixel density
Touch Type	Capacitive Touchscreen	Full Capacitive Touch	Full Touch	Capacitive multi-touch	Multi-touch capacitive touchscreen
Always-on Display	No	Yes	No	Yes	No
Brightness	5-level adjustable brightness	1000 nits (Peak)	Up to 500 nits	500-600 nits (estimated based on comparable models)	550 nits peak brightness
Refresh Rate	Not Specified	60Hz	60Hz	Standard AMOLED refresh rate	Standard 60Hz (typical for TFT)
Color Gamut / HDR Support	Not Specified	Not Specified	Not Specified	Full color AMOLED display	Standard RGB color gamut
Screen Protection	Not Specified	Flat Curved Glass	2.5D Glass	Curved tempered glass with anti-fingerprint coating	Not specified
Body
Dimensions	44 x 40 x 13 mm	Standard 46mm dial size	Round Dial, approx. 46mm diameter (exact mm not specified)	46.9 mm dial size	45.7 x 52.2 x 11.9 mm
Weight	31 grams	60 g	Approx. 40g - 45g	39 grams	27.6 grams
Case Material	Acrylonitrile Butadiene Styrene (ABS) plastic	Stainless Steel / Metal Alloy	Metallic Finish (Zinc Alloy) with Polycarbonate back	Metal with metallic finish	PC+ABS plastic with metal unibody appearance
Front Protection	Not Specified	Curved Glass	2.5D Curved Glass	Curved tempered glass with anti-fingerprint coating	Not specified
Strap / Bracelet Options	Hypoallergenic silicone strap	Silicone, Stainless Steel (variant dependent)	22mm Silicone, Metallic Link, or Mesh options	22mm silicone standard; metal mesh/chain and leather straps available separately	22mm silicone with quick-release mechanism
Removable / Replaceable Strap	Not Specified	Yes	Yes	Yes	Yes
Water Resistance	1 ATM (Up to 10m depth splash resistance)	IP68 Water Resistant	IP67 Water Resistant	IP68 - Up to 1.5m depth	IP68 - Water resistant to 1.5m depth
Dust Resistance	Not Specified	IP68 Dust Resistant	IP67 Dust Resistant	IP68 certified	IP68 - Dust resistant
Durability Certifications	IP Certified	Not Specified	Not Specified	IP68 water and dust resistance certification	IP68 certified
Primary Controls	Touch screen and single physical side button	Rotating Crown, Touch Screen, Push Button	Touch Screen, Functional Rotating Crown	Functional rotating crown, side push button, touch screen	Touch screen with gesture controls and wake-up gesture
Processor
Operating System	Proprietary Kids Smartwatch OS	Proprietary RTOS	Noise OS (RTOS)	Proprietary Noise OS (compatible with iOS 11.0+ and Android 9.0+)	Proprietary Real-Time Operating System (RTOS)
Chipset / SoC	Not Specified	Single Core Digital Chipset	Single-chip Tru Sync™ Technology	Not Specified	Not publicly disclosed
CPU Cores & Clock Speed	Not Specified	Single Core	Not Specified	Not specified	Not specified
GPU	—	Integrated	Not Specified	Not Specified	Not specified
Health & Fitness Sensors
Heart Rate Monitor	Optical heart rate sensor	Optical PPG Sensor	24/7 Heart Rate Monitor	Yes - Optical PPG sensor with continuous and manual detection	Yes - 24/7 continuous optical PPG monitoring
ECG	Not Supported	No	No	No ECG support	Not available
SpO₂ / Blood Oxygen	SpO2 Blood Oxygen sensor	Yes	SpO2 Monitoring	Yes - Optical SpO2 sensor	Yes - Blood oxygen saturation monitoring
Skin Temperature Sensor	Not Supported	No	No	Not available	Not available
Sleep Tracking	Monitors sleep duration and quality	Yes (Light, Deep, REM)	Sleep Monitor with Stages	Yes - Detailed sleep stages (Light, Deep, REM)	Yes - Automatic sleep detection with stage analysis
Step Counter	Built-in pedometer	Yes	Yes	Yes - Built-in pedometer	Yes - Pedometer with step tracking
GPS	No built-in GPS tracking	No (Connected GPS only)	No (Connected GPS)	No built-in GPS - Connected GPS only via smartphone	Not available - Bluetooth only
Accelerometer	3-axis accelerometer	Yes	Yes	Yes	Yes - Motion detection
Gyroscope	Not Specified	Not Specified	No	Yes	Yes - Rotation sensing
Barometer	Not Supported	No	No	No	Not available
Compass	Not Supported	No	No	No	Not available
Other Sensors	Step counter, Calorie tracker, Distance tracker	Sedentary Reminder, Hydration Reminder	Stress Monitor, Breathe Practice, Female Cycle Tracker	Calorie burn estimation, activity history, stress measurement, menstrual cycle tracking, VO2 Max	Stress monitor, activity tracking, calorie counter, female cycle tracker
Connectivity
Wi-Fi	Not Supported	No	No	No Wi-Fi support	Not available
Bluetooth	Bluetooth v5.3	Bluetooth 5.0	Bluetooth v5.3	Bluetooth 5.3	Bluetooth 5.3 with Tru Sync technology
NFC	No	No	No	No	No
Cellular Connectivity	No Cellular/SIM support	No	No	Wi-Fi Only (via smartphone)	None - Bluetooth only
ANT+	No	No	No	No	No
Battery
Capacity	270 mAh	300 mAh	210 mAh	300 mAh	300 mAh lithium-ion
Fast Charging Support	Not Specified	No	No	No fast charging support	Not available
Estimated Runtime	Up to 3 to 5 days on typical use	Up to 7 Days (Typical)	Up to 7 Days (Typical), 2 Days (Calling)	Up to 7 days typical use, 30 days standby	7 days typical use, 25 days standby, 2 days with heavy BT calling
Charging Method	Magnetic Pogo Pin	Wireless Magnetic Dock	Magnetic Charging	Magnetic 2-pin connector	Proprietary magnetic pogo pins connector
Battery Saver Modes	Scheduled Power Off	Power Saver Mode	Power Saving Mode	Yes - Screen brightness reduction and selective heart rate monitoring	Brightness reduction, disable 24/7 HR monitoring, low power mode
Memory & Storage
RAM	Not Specified	System RAM only	Not Specified	Not specified	Not specified
Internal Storage	Not Specified	No user accessible storage	Stores call logs and up to 10 contacts	Not specified	Limited (cloud-based watch faces only)
Expandable Storage	No	No	No	No expandable storage	Not available
Design & Comfort
Bezel Type	Fixed bezel with switchable poppy bumpers	Fixed with Rotating Crown	Fixed Metallic Bezel	Fixed bezel with metallic finish	Fixed circular bezel with flat surface design
Buttons / Crown	Single physical side button	1 Rotating Crown, 1 Push Button	2 (Side Button + Rotating Crown)	Functional mechanical crown + side push button	No physical buttons - Touch controls only
Vibration Motor	Built-in vibration for alerts	Yes	Yes	Yes - Haptic feedback vibration alerts	Yes - Linear haptic motor for haptic feedback
Screen Glass Type	Not Specified	Glass	2.5D Curved Glass	Curved tempered glass	Standard protective glass (not specified)
Health & Safety Features
Fall Detection / SOS Calling	On-device SOS button and manual emergency contact storage	No	No	Yes - SOS technology with emergency calling	Not available
Menstrual Cycle / Health Tracking	Not Supported	Yes (Female Health Tracking)	Female Cycle Tracker	Yes - Female health cycle tracker	Yes - Female health tracking with cycle prediction
Noise Monitoring	No	No	No	No	Not available
Guided Breathing / Mindfulness Features	Not Specified	Breathing Exercises	Breathe Practice	Yes - Guided breathing practice feature	Yes - Breathe Practice guided breathing exercises
Audio & Voice
Built-in Speaker	Built-in speaker for alerts and learning audio	Yes	Yes	Yes	Yes - For Bluetooth calling
Microphone	Built-in microphone for voice notes	Yes	Yes	Yes - Dual microphone setup	Yes - For Bluetooth calling
Voice Assistant	No	AI Voice Assistant (Siri/Google via Phone)	AI Voice Assistant (Siri/Google)	Yes - AI Voice Assistant with AI Search feature	Not available
Bluetooth Audio Output	No	Phone Calls Only	No	Yes - Bluetooth audio output for music control	Not available - No music streaming
Notifications & Controls
Notification Support	Call alerts, SMS/text alerts, and App notifications	Call, SMS, WhatsApp, Social Media	Call, SMS, Social Media, Email	Call alerts, SMS/messaging alerts, social media app notifications	Yes - Call alerts, SMS alerts, app notifications with preview
Quick Reply Options	Not Specified	No	Quick Reply (Android Only)	Call rejection available (no voice/text reply)	Yes - Predefined quick reply messages only
Music Control / Playback	Remote music control for paired smartphone	Music Control (Remote)	Remote Music Control	Yes - Play/Pause, Next/Previous Track, Volume Control	Yes - Remote phone music control (play/pause, volume, track skip)
Find My Phone	Yes	Yes	Yes	Yes - Find My Phone feature	Yes - Locate paired smartphone
Remote Camera Shutter	Yes	Yes	Yes	Yes - Remote camera control from watch	Yes - Remote camera trigger for photos
Security
Fingerprint Sensor	No	No	No	No	No
Face Unlock	No	No	No	No	No
NFC Payment Security	No	No	No	No NFC support - no contactless payments	Not available
Find My Watch	Yes, via Noise Junior App	Yes (via App)	Yes (via App)	Not confirmed in specifications	Not available
Ports & Accessories
Charging Connector Type	Magnetic Pogo Pin	Wireless Charging Dock	Magnetic Pogo Pin	Magnetic 2-pin proprietary connector	Proprietary magnetic pogo pins connector
Optional Docks / Stands	Not Specified	None	None	Magnetic charging dock available separately	None mentioned
Bundled Extras	1 Smartwatch, 1 Magnetic Charger, 2 Extra Switchable Bumpers, User Manual, Warranty Card	Charging Cable, Manual	Charging Cable, User Manual	User manual, warranty card, charging cable	Magnetic charging cable, user manual, warranty card
Software & Apps
App Store Availability	No proprietary watch app store	No	No	NoiseFit App on Google Play Store and Apple App Store	Cloud-based proprietary store via NoiseFit app
Customization Options	100+ Cloud-based watch faces; 3-in-1 look via switchable bumpers	100+ Cloud Watch Faces	100+ Cloud Watch Faces	100+ cloud-based watch faces + AI Create feature for unlimited AI-powered custom watch face generation	100+ cloud-based watch faces with customization through NoiseFit app
Companion App	Noise Junior App	Fire-Boltt App / Da Fit	NoiseFit App	NoiseFit App (iOS 11.0+ / Android 9.0+)	NoiseFit App - Health tracking, notifications, watch face management
OTA Updates	Supports over-the-air firmware updates	Yes	Yes	Yes - OTA updates supported	Yes - OTA firmware updates available
Pre-installed Apps	Learning Hub (Games, EduCards, Quizzes), Habit Builder, Smart Scheduler, Alarm, Timer, Stopwatch, Weather	Alarm, Stopwatch, Timer, Weather, Calculator, Games	Alarm, Stopwatch, Timer, Weather, Calculator, World Clock	NoiseFit Health Suite, AI voice assistant, activity tracking, weather app, calculator, stopwatch, timer, alarm, reminder, music control	Noise Health Suite, Breathe Practice, Female Health Tracker, Stress Monitor, Sleep Monitor, Activity Tracker, 100+ Sports Modes, Calculator, Weather, Reminders, Alarm, Timer, Stopwatch, World Clock