The Watch supports only GSM 850/900/1800/1900 MHz SIM Card It doesn't support CMDA SIM Card and only supports GSM SIM Card. GH Brothers's GHB-KW18 Smart Watch It is a fashionable appearance,complete functions,practical new-style smartwatch,it's the perfect compatible to apple and android smart phone system,is your leisure,sports,work and life good helper of intelligence,do not believe you try. Important Features: SIM card & Memory card supported: When you insert the SIM card (GSM/GPRS 850/900/1800/1900MHz) into the smart watch,it can be used as a phone. Bluetooth function: Make calls and play music for Android & IOS,Sync contact information and notification push for Android & IOS. Health function: Support Heart Rate, sedentary reminder,Pedometer,Sleep quality monitor. Cell function: Support Dial,hands-free,phone records,the phone book,Bluetooth phone. Specification: CPU: MTK2502C Bluetooth: Ver 4.0 Resolution: 240 * 240 pixels Storage: RAM 128M+ROM 64M,External memory: Support TF card up to 16GB (not included) Battery: 340mAh Frequency: GSM 850/900/1800/1900 MHz,Single Micro SIM Card (not included) Clock display: Support 3 sets of display clock,free switch,Click to follow switch Anti-lost: Support the lost remind Package included: 1 X GHB-KW18 Smart Watch 1 X Magnetic charging cable 1 x Screen protective film 1 X Screwdriver with 4 screws 1 X Manual
