Striiv Smart Pedometer 2 inch color touch screen Built in charts, games, and apps Rechargable battery 2.0 Inch (diagonal) Color Display, 320 x 240 Pixel Resolution, 2.0 Inch (diagonal) Touch Screen, Home, Back and Power Buttons 500MHz Dual Core Processor, Vector Graphics Support 3 Axis Accelerometer, Altimeter Built-in Rechargeable Lithium-Ion Battery, Up to 1 week of use when fully charged, Charge Time: Charging via USB wall adapter: 2hrs, Charging Via Computer USB port: up to 4hrs