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

Specification	Fastrack Limitless FS2+ ₹1,599 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	Fire-Boltt Hunter 51.1mm ₹1,399 Prices and availability may change on the seller's site View Price	Noise Colorfit Icon 2 ₹1,499 Prices and availability may change on the seller's site View Price
General
In The Box	Smartwatch, Magnetic Charging Cable, Quick Start Guide, Warranty Card	Smartwatch, Magnetic Charging Cable, User Manual, Warranty Card	Smartwatch, USB Charging Cable, User Manual, Warranty Card	1x Smartwatch, 1x Magnetic Charging Cable, 1x User Manual, 1x Warranty Card
Model Name	Fastrack Limitless FS2+	NoiseFit Twist	Fire-Boltt Hunter 51.1mm (2.01) HD Display Bluetooth Calling Single Chipset, Metal Body	Colorfit Icon 2
Launch Date	10/07/2024	12/01/2023	25/05/2023	17/07/2022
Colors	Charcoal Black, Wine Red, Copper Teal, Blue, Beige	Jet Black, Silver Grey, Rose Wine, Rose Pink, Space Blue	Black, Dark Blue, Light Grey, White, Blue, Silver, Mist Grey	Jet Black, Silver Grey, Deep Wine, Rose Pink, Midnight Gold, Midnight Blue, Forest Green, Cherry Red
Brand	Fastrack	Noise	FireBoltt	Noise
Display
Display Size	2.01, 5.1	1.38, 3.5	2.01, 5.1	1.8, 4.57
Resolution	320, 320 pixels	240, 240 pixels	240, 296 pixels	240, 280 pixels
Panel Type	TFT LCD UltraVU Display	TFT LCD with 246 PPI pixel density	TFT LCD	LCD
Touch Type	Capacitive Touchscreen	Multi-touch capacitive touchscreen	Capacitive Full Touch Screen (Single Touch)	Capacitive Touchscreen
Always-on Display	No	No	No	No
Brightness	Not specified	550 nits peak brightness	450 nits	500 nits
Refresh Rate	Not specified	Standard 60Hz (typical for TFT)	Standard refresh rate (not specified)	Not specified
Color Gamut / HDR Support	Standard color gamut, no HDR support	Standard RGB color gamut	Standard color gamut, no HDR support	Not specified
Screen Protection	Not specified	Not specified	3D Curved Glass, Scratch Resistant	Not specified
Body
Dimensions	Not Specified	45.7 x 52.2 x 11.9 mm	51.3mm (Diameter) x 9.8mm (Thickness)	44.5 x 36.5 x 11 mm
Weight	48 grams	27.6 grams	36.8 grams	53.5 grams
Case Material	Polycarbonate	PC+ABS plastic with metal unibody appearance	ABS + PC Zinc Alloy with Vacuum Plating (Metal Finish)	Zinc alloy and Polycarbonate
Front Protection	Not specified	Not specified	3D Curved Glass (Scratch Resistant)	Not specified
Strap / Bracelet Options	Silicone	22mm silicone with quick-release mechanism	Silicone (Removable and Replaceable)	Silicone strap
Removable / Replaceable Strap	No	Yes	Yes	Yes
Water Resistance	IP68 (1.5m water resistance)	IP68 - Water resistant to 1.5m depth	IP67 - Can withstand submersion up to 1 meter for 30 minutes	IP67
Dust Resistance	Yes, dust proof (IP68 certified)	IP68 - Dust resistant	IP67 rated	IP67
Durability Certifications	IP68 certified	IP68 certified	IP67 certification, Scratch resistant	None mentioned
Primary Controls	Functional Crown (touch-sensitive), Touchscreen	Touch screen with gesture controls and wake-up gesture	Touchscreen + Single Physical Button	Touch Screen, 1x Side Button (Power/Wake)
Processor
Operating System	Android, iOS compatible	Proprietary Real-Time Operating System (RTOS)	Proprietary OS (Compatible with Android v5.0+ and iOS)	Proprietary OS
Chipset / SoC	Not Specified	Not publicly disclosed	Single Chip Architecture (not detailed)	Not specified
CPU Cores & Clock Speed	Not Specified	Not specified	Not specified	Not specified
GPU	Not specified	Not specified	Not specified	Not specified
Health & Fitness Sensors
Heart Rate Monitor	24x7 Heart Rate Monitoring	Yes - 24/7 continuous optical PPG monitoring	Yes (HX3600 / HRS3600 Optical PPG Sensor)	Yes (Optical PPG sensor)
ECG	No ECG support	Not available	No ECG support	No
SpO₂ / Blood Oxygen	SpO2 / Blood Oxygen Monitor with continuous monitoring	Yes - Blood oxygen saturation monitoring	Yes (Blood Oxygen Monitor)	Yes
Skin Temperature Sensor	Not mentioned	Not available	No Skin Temperature Sensor	No
Sleep Tracking	Sleep Tracker with sleep quality analysis	Yes - Automatic sleep detection with stage analysis	Yes (Sleep Monitor)	Yes
Step Counter	Pedometer / Step Counter	Yes - Pedometer with step tracking	Yes (Pedometer)	Yes
GPS	Connected GPS (via smartphone only)	Not available - Bluetooth only	Yes (Built-in GPS)	No (Connected GPS via smartphone)
Accelerometer	Yes, Accelerometer sensor	Yes - Motion detection	Yes (3-Axis Accelerometer)	Yes
Gyroscope	Not specified	Yes - Rotation sensing	Gyroscope mentioned in some sources but not confirmed	Not specified
Barometer	Not specified	Not available	Yes (Barometer sensor mentioned)	Not specified
Compass	Not specified	Not available	Compass functionality not clearly specified	Not specified
Other Sensors	Stress Monitor, Menstrual Cycle Tracker, Women's Health Tracking	Stress monitor, activity tracking, calorie counter, female cycle tracker	Sedentary Reminders, Breathing Monitor, Voice Assistance, Calorie Counter, Physiological Cycle Reminder	Stress monitor, Breathing exercise tracking
Connectivity
Wi-Fi	No Wi-Fi support	Not available	No Wi-Fi	No
Bluetooth	Bluetooth 5.3	Bluetooth 5.3 with Tru Sync technology	Bluetooth v5.0	5.1
NFC	No	No	No	No
Cellular Connectivity	Bluetooth calling only (SingleSync), no standalone cellular	None - Bluetooth only	Wi-Fi Only (via paired smartphone)	No
ANT+	Not Specified	No	No	No
Battery
Capacity	280 mAh Lithium Polymer	300 mAh lithium-ion	280-300 mAh (sources vary)	260 mAh
Fast Charging Support	Yes - NitroFast Charging (10 min for 1 day use)	Not available	No Fast Charging	No
Estimated Runtime	Up to 7 days typical use, 10+ days standby	7 days typical use, 25 days standby, 2 days with heavy BT calling	Typical: 5-7 days \| With Bluetooth Calling: 2-3 days \| Standby: 15 days (360 hours)	4-7 days
Charging Method	Magnetic charging connector	Proprietary magnetic pogo pins connector	USB Magnetic Charging Points (Wired)	Magnetic charging cable
Battery Saver Modes	Not mentioned	Brightness reduction, disable 24/7 HR monitoring, low power mode	Yes (Battery Saver Mode available)	Not specified
Memory & Storage
RAM	Not officially specified	Not specified	Not specified (watch operates on proprietary OS)	Not specified
Internal Storage	Not officially specified	Limited (cloud-based watch faces only)	Not specified	Not specified
Expandable Storage	Not applicable	Not available	Not applicable	No
Design & Comfort
Bezel Type	Fixed, minimal bezel	Fixed circular bezel with flat surface design	Fixed Bezel (Non-rotating)	Fixed bezel
Buttons / Crown	Functional Crown (touch and pressure sensitive)	No physical buttons - Touch controls only	Single Physical Button	1x Side Button for power on/off and wake functions
Vibration Motor	Yes, haptic feedback vibration motor	Yes - Linear haptic motor for haptic feedback	Yes (Haptic Vibration Motor)	Yes
Screen Glass Type	Not specified	Standard protective glass (not specified)	3D Curved Glass	Not specified
Health & Safety Features
Fall Detection / SOS Calling	Emergency SOS capability available	Not available	No Fall Detection or SOS Calling	No
Menstrual Cycle / Health Tracking	Women's Health Tracking with menstrual cycle tracking	Yes - Female health tracking with cycle prediction	Yes (Physiological Cycle Reminder)	Yes
Noise Monitoring	Not mentioned	Not available	No Noise Monitoring	No
Guided Breathing / Mindfulness Features	Breathe Exercise feature	Yes - Breathe Practice guided breathing exercises	Yes (Breathe Monitor, Relaxation App)	Yes (Breathing exercises, Stress measurement)
Audio & Voice
Built-in Speaker	Yes, built-in speaker	Yes - For Bluetooth calling	Yes (Dedicated HD Speaker)	Yes
Microphone	Yes, high-quality microphone	Yes - For Bluetooth calling	Yes (Built-in Microphone for Bluetooth Calling)	Yes
Voice Assistant	Yes, AI Voice Assistant (compatible with Alexa)	Not available	Yes (AI Voice Assistant, Google Assistant & Siri Compatible)	Yes
Bluetooth Audio Output	Yes, via Bluetooth headphones	Not available - No music streaming	Yes (Bluetooth Audio Output via connected phone)	No
Notifications & Controls
Notification Support	Call Alerts, SMS/Messaging, App Notifications, Social Media Alerts	Yes - Call alerts, SMS alerts, app notifications with preview	Call Alerts, SMS/Messaging, App Notifications, Social Media Alerts	Yes
Quick Reply Options	Predefined Quick Replies (Android only)	Yes - Predefined quick reply messages only	Predefined Messages and Voice Reply	Predefined messages
Music Control / Playback	Full music control: Play/Pause, Volume, Previous/Next, Streaming control	Yes - Remote phone music control (play/pause, volume, track skip)	Yes (Play/Pause, Volume Control, Next/Previous Track)	Remote music control (Play/Pause, Volume, Track control)
Find My Phone	Yes, Find My Phone feature	Yes - Locate paired smartphone	Yes (Find My Phone Feature)	Yes
Remote Camera Shutter	Yes, Camera Control feature	Yes - Remote camera trigger for photos	Yes (Remote Camera Control)	Yes
Security
Fingerprint Sensor	Not Specified	No	No	No
Face Unlock	Not Specified	No	No	No
NFC Payment Security	No NFC support	Not available	No NFC, No Payment Security	No
Find My Watch	Not explicitly mentioned	Not available	Yes (Find My Watch Feature)	Yes (via NoiseFit companion app)
Ports & Accessories
Charging Connector Type	Magnetic charging connector (proprietary)	Proprietary magnetic pogo pins connector	USB Magnetic Charging Points	Magnetic charging pins
Optional Docks / Stands	None mentioned	None mentioned	Not specified	Not specified
Bundled Extras	Quick Start Guide, Warranty Card, Magnetic Charging Cable	Magnetic charging cable, user manual, warranty card	Smartwatch, USB Charging Cable, User Manual, Warranty Card	Not Specified
Software & Apps
App Store Availability	Fastrack Smart World App (Google Play compatible)	Cloud-based proprietary store via NoiseFit app	Limited third-party app support (proprietary ecosystem)	No
Customization Options	200+ Watchfaces, Multiple Menu Styles, Custom Watch Face Creation, 110+ Sports Modes, In-Built Games, Calculator	100+ cloud-based watch faces with customization through NoiseFit app	130+ Cloud Watch Faces, Customizable Quick View Widgets, Multiple Theme Options	100+ cloud-based watch faces
Companion App	Fastrack Smart World App (formerly Fastrack Reflex World App)	NoiseFit App - Health tracking, notifications, watch face management	Fire-Boltt Health App (Android & iOS)	NoiseFit (for iOS) / NoiseFit Track (for Android)
OTA Updates	Yes, over-the-air updates available	Yes - OTA firmware updates available	Yes (Over-the-Air Updates Available)	Yes
Pre-installed Apps	110+ Sports Modes, 200+ Watchfaces, In-Built Games, AI Voice Assistant, Calculator, Alarm Clock, Stopwatch, Timer, Stress Monitor	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	120+ Sports Modes, Heart Rate Monitor, Sleep Tracker, SpO2 Monitor, Weather App, Alarm, Stopwatch, Timer, Calculator, Camera Control, Music Player, AI Voice Assistant, Menstrual Cycle Tracker, Google Fit Integration	60 sports modes, In-built games, Productivity Suite (Timer, Stopwatch, Alarm, Weather, Calendar)