Features

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Camera and Display Features
Display Resolution 360 x 360 Pixels  400 x 400 Pixels  240x240 pixels  176 x 176 Pixels
Display Size 1.3 inch  1.4 inch  1.6 inch  1.28 inch
Display Type AMOLED  OLED  TFT  LCD
Backlight Display Yes Yes Yes
Scratch Resistant Yes Yes Yes
Other Display Features AMOLED Color Display with Corning Gorilla Glass 3 ProtectView More... Capacitive Curved Touch  Always-on Reflective Color Display, 3rd Gen 2.5D Corning  View More...
Fitness and Watch Functions
Calorie Count Yes Yes Yes
Step Count Yes Yes Yes
Heart Rate Monitor Yes Yes Yes
Other Fitness Features Sedentary Reminders, Activity Tracker (Distance, Steps, CView More... Sleep Tracking  Pedometer  Activity Tracking Features: Burned Calories, Elevation, S View More...
Date & Time Display Yes Yes Time  Yes
Compass Yes Yes
Calendar Yes Yes Yes Yes
Alarm Clock Yes Yes Yes Yes
Language English  English  English
Number of Buttons 1  1  1
Other Watch Functions Customizable Watch Faces, Music Control, Silent Alarms wiView More... Rich Watch Faces Selection Exclusively Designed for TicwaView More... Messages, Alert on Calls, Sync Call Logs, Shows Call, FinView More... Show Weather Forecasts, Alarms, Timer, Sports Stats, Cale View More...
Dimensions
Weight 41.5 g  50.3 g  31 g
Diameter 43 mm  44 mm 
Other Dimensions Dimensions: 45 x 41 x 11.2 mm 
Thickness 21.8 mm  13.55 mm 
Warranty
Warranty Summary 1 Year Manufacturer warranty  1 Year Warranty  6 Month Manufacturing Warranty  1 Year Warranty
Warranty Service Type Carry In  Carry In  For Any Issues Regarding the Product Please Contact: 1800 View More...
Covered in Warranty Manufacturing Defects  Manufacturing Defects  Manufacturing Defects
Not Covered in Warranty Physical Damage  Physical Damage  Physical Damage
Domestic Warranty 1 Year  1 Year  1 Year
Audio and Video Features
Speaker Yes
Microphone Yes
Other Multimedia Features SMS / MMS Notification 
Voice Control Yes Make Calls 
General
Sales Package Smartwatch, Charging Cable, User Manual  Smartwatch, Charging Cable, User Manual  Smartwatch, Cable, Charging Dock, Warranty Card, User ManView More... Smartwatch, Charging Cable, User Manual
Model Number A1818  WF12086  IRIST PRO  AMZBIPBLK / A1608
Model Name Amazfit Verge Lite  Ticwatch Express  IRIST PRO  Amazfit Bip
Dial Shape Circle  Circle  Rectangle  Rectangle
Strap Color Grey  Yellow  Brown  Black
Strap Material Silicone  Silicone  Silicone  Silicone
Size Regular  Regular  Regular  Regular
Touchscreen Yes Yes Yes Yes
Water Resistant Yes Yes Yes Yes
Usage Fitness & Outdoor  Fitness & Outdoor  Watchphone  Fitness & Outdoor
Ideal For Unisex  Unisex  Unisex  Men
Dial Color Black 
Water Resistance Depth 1.5 m  1 m 
Dial Material Aluminium 
Product Details
Closure Strap Buckle  Strap Buckle  Strap Buckle
Sensor Tri-axial Acceleration, PPG Heart Rate, Ambient Light SenView More... Accelerometer, Gyroscope, e-Compass, Heart Rate Sensor, PView More... Accelerometer, Gyroscope  3-axis Accelerometer, Optical (PPG) Heart Rate Sensor, Ba View More...
Compatible Device iPhone, Android Smartphones  iPhone, Android Smartphones  Compatible with Smartphones  iPhone, Android Smartphones
Notification Yes Yes IM Notification, Phone Call Notification  Yes
Notification Type Vibration  Vibration  Vibration
Battery Type Lithium Polymer  Lithium Ion  Li-Polymer  Lithium Polymer
Battery Life Upto 20 Days (Based on Usage)  Upto 48 hrs (Based on Usage)  Standby Time 120 HrsTalk Time 180-240 min  Upto 45 Days (Based on Usage)
Rechargeable Battery Yes Yes Yes Yes
Charger Type AC Adapter  Magnetic Connecting Pin Charging  Charging Dock  AC Adapter and USB Cable
Other Features Sleek and Minimalistic Design, Built-in Ultra Low Power SView More... Changable Watch Straps, Supports Google Assistant, Light View More... Can View Call Logs as they Appear on Smartphone, Battery View More... Lightweight, 20 mm Standard Width Changeable Watch Band,  View More...
Charge Time 180 min 
Platform and Storage Features
Compatible Operating System Android & iOS  Android & iOS  Android 4.4+  Android & iOS
Operating System Android Wear 2.0  Proprietary 
RAM 512 MB  64 MB 
Processor Name MT2502C 
Internal Memory 4 GB  128 MB 
Connectivity Features
Call Function No  No  Yes No
Bluetooth Yes Yes Yes Yes
Wi-Fi No  Yes No
GPS Yes Yes No  Yes
Bluetooth Version v5.0  v4.1  v4.0  v4.0
Other Connectivity Features Wi-Fi (802.11b/g/n)  Bluetooth Low Energy (BLE) Support 
Messaging Support Yes
Call Features Dialer 
Operating Range 10 m  10 m 
Third Party App Support Yes