Specifications: Parameters Model Z02 Color Red, Blue, violet, Black Material Front shell: Glass Back shell: ABS+PCStrap: TPUSize Watch:about 255*11*36mm[ Conversion: 1mm=0.03937 inch, 1inch=25.4 mm] Technical Parameters Screen Display 1.3 inch IPS display Batterypolymer lithium battery 170m Ah Bluetooth 4.0BLE (low power consumption) Charging methodmagnetic charging Charging timeabout 2 hours Life time 7 days of use, 15 days of standby Data storage 3 months Compatible System Android 4.4 & above, i OS 8.2 & above Waterproof IP67 waterproof Features Special Function 1. Offline measurement, turning the wrist screen 2. Wearable Hardware + Smart APP + Big Data Cloud Service 3. Wear it with your app, control, display, record, & synchronize data to the cloud in real time.4. Wearbale Hardward+ Smart A pp+ Big Data Clound Service, Wearing this smartwatch in any time. throught the App control, display, record the data. the data will sync to the app & clound sevice. This can find & detect our data, Step, calories, distance, sleep monitoring, sports mode, call reminder, alarm reminder, h&-on bright screen, social sharing (We Chat, QQ, Facebook, Twitter) & shake photos Health Funciton 1. Heart Rate Monitor, 2. Carry out physical health changes, detect health data, show risk status & evaluate results 3. This smartwatch can monitor our body health value. this can find & detect our health data, display risk status & evaluation results. Language: Product language: Chinese/ English & other 12 languages Firmware language: Chi