Specification Model M13 CPU Qualcomm 8909 Operation System Android 6.0 Memory 1G RAM 8G ROM Frequency Band 2G: 850 / 900 / 1800 / 1900 / 800D 3G: TD-SCDMA B34 / B39 3G: WCDMA B1 / B2 / B5 4G: FDD B3 / B7 4G: TDD B39 / B40 / B41 SIM Card Nano Card Touch Screen 1.54'' IPS Resolution 240 x 240 Camera 3 Million Pixels WIFI Support GPS / Google Play Support bluetooth Version BT 4.0 or above Battery Capacity 600 mAh Standby Time about 60 hours Using Time about 48 hours Charging Time about 5 hours (Use a 5V USB adapter to charge at least 5 hours for full charging) Language English,Chinese,French,Portuguese,Spanish,Italian,German,Russian,Thai,Turkish,Vietnamese,Arabic, Hebrew,Hindi,Indonesian,Malay,Persian,Polish,Czech English,Finnish,Greek,Croatian,Dutch,Romanian Features Phone Call Support Phone Book Support SMS,Message Reminder Support Heart Rate Monitor Support Sedenarty Monitor Support Activity Monitor(Step,Distance,Calories Measuring) Support Alarm Support Browser Support Pedometer Support Music Support Recording Function Support Water Resistance IP67 Waterproof. Support to swim, wash hands and shower. But don't bath in hot water and don't operate in water. Phone Asistance Android Phone Support Android 4.4 or above Phone IOS Phone Support IOS 9.0 or above Phone Appearance & Details Dial Shape Square Dial Case Material ABS Dial Diameter about 54 mm Dial Thickness about 16.5 mm Watchband Width about 13 mm Watchband Length about 255 mm Watchband Material TPU Package Included 1 X Smart Watch Phone 1 X User Manual 1 X Charge Cable Notice: The picture is only for reference,please consider carefully before purchase. Because the smart watch app and software has occupied about 3GB memory, the rest free using memory is about 5GB.