Band length [mm]: 215, Band width [mm]: 22, Weight [g]: 177, Voice assistant built-in: YES, Bluetooth-compatible Version: 5.0, Wi-Fi: No, Metrics measured: Heart Rate Monitor, Blood Oxygen Monitor, Sleep Monitor, Activity Tracked: Steps Tracker, Distance Tracker, Calorie Tracker, Activity Tracker, Touch Screen: YES, Category: Smart Watches, App name: Infowear, Screen Material: TFT, CPU Model: Dialog14695, Band Detachable: Yes, APP Download Available: No, Battery Detachable: No, Resolution: 360*360, Display Size: 1.32, Movement Type: Electronic, Style: SPORT, Screen Shape: Round, Case Material: ALLOY, Band Material: Silica GEL, Waterproof Grade: Life Waterproof, SIM Card Available: No, Mechanism: Yes, Multiple Dials: Yes, GPS: Yes, Network Mode: None, Battery Capacity: 220-300mAh, Rear Camera: None, RAM: 128MB, ROM: 128MB, System: None, Type: On Wrist, Compatibility: All Compatible, Language: English, Function: Pedometer, fitness tracker, sleep tracker, Message Reminder, Call Reminder, Answer Call, Dial Call, REMOTE CONTROL, Push Message, 24 hour instruction, Chronograph, Alarm Clock, Speed Measurement, Month, Heart Rate Tracker, Calendar, Countdown, Calculator, Colour: Silver Gray, Material: Silicone+Metal, Package Contents: 1 x Smart watch. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.