Zakk U8s Smart Watch has a Square Shape Touch screen Dial display. Bluetooth Mode: You can connect calls, disconnect, send & get messages notifications through Bluetooth feature and listen music through synchronizing by your smart phone. It is compatible to devices having Bluetooth version 2.0 and aboveversion of Bluetooth in smart phones, Tablets and PC’s and for android devices, it iscompatible to the version of V2.3 to latest one. It has features such as hands free calling function which enables you make a call and disconnect it,you can also send and receive text messages through it. Phonebook features for which you need to download BT App (BT notifierApp), Ringing Reminder, Anti lost alarm to make you warn about where you phone is,this feature is only activated when you sync your phone with the watch. It also supports taking Remote photo function that allows your mobile (only Android) for the battery backup.it has Charging Time Ability of 1 hour, Talk Time: About to 2 hours, Stand by Time of about 48 -72 hours and music playing capacity of 1.5 hours. Features of U8s 1.5" Capacitive Touch Screen ,Time / Date / Week / Battery state display Ringing reminder when you receive a call Ringing reminder once your mobile phone disconnected Display the number or name of incoming calls Answer or Dial calls from your wrist Support hands-free calls, phone book& text messages Play the music in your phone (after Bluetooth paring) Sync SMS/call history(only for android phone) Ringing Reminder: When your phone (Android 2.3 or above) receive a message Remote Photo Function: You can control your cellphone to take photo from your wrist (only for android phones) Anti-Lost Alarm Function: When cellphone left watch alarm automatically, after a certain distance to avoid lose the phones.