Processor:MediaTek 6261S processor Operating System:Proprietary OS Display:1.22" inch 240 x 240 pixels (261 ppi) Memory:128 MB +128 MB Battery:380 mAh Talk time: 3 hours Stand by Time: 180 hours Sensors::Pedometer, Heart rate Monitoring, Motion Sensor, Thermometer, ECG, UV intensity measurement Design Circular DISPLAY Screen Size 1.22" inch Display Type Capacitive,IPS Screen Resolution 240 x 240 pixels (261 ppi) Touch Type Yes BODY Size 53 x 44 x 12 mm Weight 62.5 g Casing Zinc Alloy PLATFORM OS Platform Proprietary OS PROCESSOR CPU MediaTek 6261D processor MEMORY Internal Storage 128 MB RAM 128 MB Card Slot Yes Micro SD card CONNECTIVITY SIM Slot Yes Micro SIM GSM 850/900/1800/1900 MHz WIFI none NFC none Bluetooth 3.0 USB Yes Micro USB (charging port) BATTERY Battery Capacity 280 mAh Charging Technology Micro USB BODY RESISTANCE Glass Technology NANO Toughened Glass Screen SENSORS Sensors/Functions Pedometer, Heart rate Monitoring, Motion Sensor MEDIA Audio Video player, Sound Recorder Radio Speaker Microphone CAMERA Camera Type Yes FEATURES Features call and message notifications,calorie counter, distance counter, sedentary reminder, sleep monitoring, QQ, Wechat, Facebook COMPATIBILITY Android and iOS Brand Sastotrade SKU SA316EL0CXWDKNAFAMZ-106702 Compatible Operating System Android Bluetooth Version Bluetooth 3.0