COMBO X6 calling Smartwatch,Features: High Sensitive Capacitive Touch Screen. Perfect Match Technology,1.54inch TFT HD LCD. Resolution Ratio: 240x240 Pixel. Compatibility: All android and iOS Mobile Phone and android Tablet PC. android Mobile Phone. Other function: Image Viewer, Sound Recorder (Need Put and SD Card ), Audio Player, Remote Capture, Alarm Clock, Calendar, Calculator, Camera,Two Way Anti-Lost Sync function: QQ, Wechat,twitter,facebook,browser time,schedule,read text message sport health: pedometer,sleep monitoring,sedentary remind Two working modes: one is company mode(Bluetooth). it enables to make phone or receive or send or get message etc via Bluetooth. The other one is network mode(sim card inserted). It enables to make the phone and send or get a message via the sim card you inserted which means at this time this watch works as a real cellphone.