Tera Aplus Bluetooth LCD Intelligent Waterproof Watch Wristband Pedometer Color Black with Steps Tracking Sleep Monitoring Phone Anti-lost Call Message Sync NFC Support SIM and TF Card Bluetooth notification allows for information of QQ, We Chat, E-mail, Twitter and Face book sync (Only for Android OS 4.1 and above). Bluetooth music support MP3, MP4, AVI format and FM, video/WAV sound recording and play. Incoming call and message sync (message sync only for Android OS 4.1 and above). Dialing and answering (HF) telephone, call log and phone book sync, Bluetooth call. Cell phone and watch two-way anti-lost. Steps tracking, test distance and calorie. Support SIM card and max 32GB TF card insert. NFC for Bluetooth match fast and easily. With water repellent frame but don't use it in water! Compatible with Android OS and Apple IOS. Please refer to the user's manual to check the exact specifications before using.