NoteAt present only support part of the function for iPhone. For IOS system it supports music player hands-free/making calls/video etc.</br>Supporting SIM/ TF CardIt's not only a wristwatch but also a cell phone. Bluetooth Sync to Android/ iOS. *Note:SIM card and SD card are not included.</br>Adjustable BrandThe brand made by stainless steel fully solid chain beadswear resistant and shineprevent corrosion and prevent scratch.</br>FunctionsViewing E-mail caller ID Using calendar Posting Facebook/Twitter Pedometer sedentary reminder sleep quality monitor remote camera calendar calculator 130W camera video recorder Browser customizable watch faces and SMS push are waiting for you to discover and experience.</br>Customer Support&Warranty24 hours customer service support & 12 month quality warranty for every customer from Fantime.Any questions and confusing Pls feel free to contact our customer service via E-mai.</br></br>Product Description</br></br><b>[Note]</b>The watch support SIM card (GSM/GPRS 850/900/1800/1900) and memory card.<br><br> <b>Functions: </b><br> 1: Receive and send message.Dial/answer phone calls.You could dial or answer phone calls through this device. <br> 2:Playing mp3 music and mp4 video of your watch: If you put your TF card in it?? you could play mp3 music by using this watch.<br> 3:Pedometer: Calculation of the walking distance of time and the number of kilometers. <br> 4:Anti lost: Watch will shake alarm after keep away from the mobile phone for a certain distance. <br> 5:Sleep monitor: It could monitor whether your sleeping is well or not<br> 6:Sedentary remind:You could set it to remind yourself to walk or exercise