Bluetooth Smart Watch Touchscreen with Camera, Sim Card SlotMusicUnlocked Smartwatch Cell Phone for Android Samsung and iOS (Black) Comfortable Wearing: Wrist Friendly design with a Very light Stainless steel frame. Anti-sweat watch strap is made of Soft Nano TPU85 which is a super dourable materia. Multi-Function and Compatibility: Pedometer, Sleep Monitor ,Sedentary Remind, Remote Photography, Music Player, Alarm Colck,Two-way anti lost remind, Voice Recorder, Multi-timezone, Multi-Language, Notfication push for SNS, Email, Text, etc. All functions are available for Android Smart Mobiles. However, it only supports part of functions for iPhone. (Such as sync calls/call history/music ) Two Working Model:1.With Sim Card: Making and answering phone directly. 2.Withtout Sim Card: Making and answering phone by connecting with your phone Long Battery Life:The smart watch is installed with 380mAh lithium battery which can be used for more than 2 days. Lifetime Warranty:Free return within 90days. Refund or replacement will be arranged immediately if you are not satisfied with this smart watch.