Green Cell GR03 is a four-pack of rechargeable AAA batteries for devices that use this cell format. They are also identified as R03, HR03 and MICRO, helping you match the cells to the format specified for your device.
Each Ni-MH cell has a capacity of 950 mAh and a nominal voltage of 1.2 V. The listed dimensions are 10.5 mm in diameter and 44.5 mm in height. They can be used like disposable AAA batteries and charged with chargers designed for AAA batteries.
Examples given by the manufacturer include remote controls, wireless mice and keyboards, clocks, radios, toys and flashlights.