Touchscreen 1.54 inch IPS HD LCD screen with 3.0 Bluetooth headset and bluetooth Speaker</br>SIM/TF card: It's a phone independently make / receive phone calls with its own SIM card,You can use different TF card such as 4GB, 8 GB, 16 GB, 32 GB.</br>Full stainless steel metal，Replacement watchband, 1 leather band for free, you can change the watch bands as your wishes.</br>Z50 smart watch can record steps, calories and distance. Let you know your sports data, adjust your exercise program and get healthier life</br>Built in 0.3 MP camera,Whatsapp, Facebook,Twitter and so on. 3.0 Bluetooth to enjoy your music for IOS, android phone</br></br>Product Description</br></br>Android System can support all function in the description Below 3 functions can't sync with iPhone. But all other functions can use normally. Anti-lost Messaging Remote Camera Watch band: replacement, additional Leather-band included</br><br/>http://www.amazon.com/gp/product/B01KFNNFOY