Aluminum case for Galaxy Tab 10.1 with Bluetooth keyboard 1.Aluminum alloy, light, only 280g. 2.Built-in ... function keys for Galaxy Tab 10.1 inch including back/home/menu/lock/light control/mute/volume contral, etc.6 ... : 3 years 12,Lithium Battery spec.: 45 x 16 x 5 mm 13,Operating range: 10m 14,Keys ... operating life: 5 million times 16,Operating temperature: -10-+55°C 17,Storage temperature: -40-+70°C ...