Samsung Galaxy Gear Fit SM-R350 Smartwatch Tracker - Retail Packaging - Charcoal Black 1.84" AMOLED Color, Touch, Curved Display Connectivity: BT 4.0, Wi-Fi 802.11 b/g/n, GPS/aGPS OS: Tizen-W, Processor: Cortex M4 Memory: 8MB RAM; Battery: 210mAh Sensors: IP67, heart rate monitor, accelerometer, pedometer Samsung Gear Fit keeps you connected with your devices, as it is compatible with various Galaxy smartphones and tablets Samsung Gear is compatible with 17 types of device models and compatible models to be further expanded