Techmade Joy CollectionSmartwatch With A White Silicone Strap & 0.96 "COLOR Display Screen. After the success of the TM-JOY, Techmade has decided to improve its performance and design to offer customers a more innovative and pleasant product to wear. CPU: Dialog DA14585 Technology: T 4.0, G-SENSOR, Waterproof IP68 Drums: 120 mAh Li-polymer Compatibility: Smartphone iOS 11.0 or higher and Android 6.0 or higher Other Functions: Pedometer, Watch, Alarm, Calories, Distance, Call Alert, Notifications, Sleep Monitor, Sedentary Reminder, Wrist Sense, Heart Rate