Smartwatch is Fully Compatible with All Android Smart phones, such as Samsung, Google, LG, HTC, SONY, Motorola, Nokia, SHARP, Huawei, Xiaomi, OPPO, Vivo, Lenovo, ZTE and other Android phones. Product Weight: 56g Package Weight: 175g Battery: 3.7V/280mAh Li-ion(Real capacity) Support Picture Format: JPEG, GIF, BMP, PNG Support Music Format: MP3, WAV Smart Watch Functions: Dialer, Messaging, Phonebook, Call logs, Remote notifier, Remote capture, File manager, Image viewer, Setting, Calendar, Alarm, Sound recorder, Bluetooth, Audio player, Profiles, Pedometer, Sleep Monitor, Sedentary reminder, Quick response, Anti lost. Please note 1 : Remote notifier, Remote capture, Anti lost, you need to download a Funrun App in your Android smart phone, then you can use these features. Please note 2 : Image viewer, Sound recorder, Audio player, need to put a TF memory card in this smart watch.(TF card maximum support 32GB ) Please note 3 : If you want to use this smart watch to work without a mobile phone, you need to put a SIM card into this smart watch. (It only supports Nano SIM card: GSM/GPRS 850/900/1800/1900) We recommend the T-mobile GSM SIM card. Package Includes: 1 x Smart Watch 1 x USB Charging Cable 1 x User Manual