Cross-Border New Product for D18 round Screen for Smart Bracelet Color Screen Sleep Monitoring Waterproof Record Number of Steps Men and women Features: Support mobile phone version: IOS8.0 or above, Androi d 4.4 or higher APP language: Chinese, English, Western, French, German, Russian, A, Dutch, Portuguese, A, Tu, Japanese, Malaysia, Thailand Information reminder language : medium, all European languages Application function Step by step: support Distance: Support Calories : Support Blood pressure: support Blood oxygen : support Information Reminder: QQ, for facebook, whatsapp, twi tter, Skype, instagram, WeChat Sedentary reminder : support Alarm clock : support Stopwatch : Support Sleep monitoring: support Looking for a mobile phone: support Looking for a bracelet: support Specifications: Machine size: diameter 44mm*11.6mm Strap width: 18mm Machine material : TP plastic Front frame: plastic Back cover: plastic Strap : TPU Motherboard CPU: LD719-V1.0 Button : Single for touch Bluetooth-compatible : 4.0 Bluetooth-compatible name :D18 Display size: 1.3 inches Resolution: 240*240 Type : Oled color screen Battery Material : Lithium Polymer Capacity: 90mAh Standby time: more than two weeks Use time: more than 1 week Charging method: USB interface charging Package included: 1 x for Smart watch 1 x Manual