Sensor Core Integrates Oled Display, 3-axis Accelerometer, Uv Sensor, Vibration Motor, Bluetooth 4.0 & Li-polymer Battery Promising 10 Days of Tracking on Single Charge. Q-watch Makes Use of Built-in Sensors to Track Fitness Metrics. It Features Smart Notification Alerts So Users Will Never Miss Any Call, Message, & Important Schedule Any More. Press of Button Allows You to Easily Reject Any Undesired Incoming Call. Light Weight & Stylish, Its Band is Supplied in Neutral Mineral Black to Suit All Tastes. Strap Can be Changed to Suit Individual Tastes at Many Retail Outlets. Those Who Want to Track Further Metrics Such as Speed, Latitude, Route Map & So On, App Can Adjusted to Display These Metrics When Phones Gps is Switched On. Minimum Quantity: 1.