mini wireless keybaord with touch pad (mini air keyboard) English keyboard Ver: 80RF/2.2 Main Features: Wilress mouse 2.4G connection range: Radius 10 m High sensitivity touch template, template DPI adjustable function touch Mini QWERTY 92-key keyboard multimedia control keys and PC gaming control keys Automatic sleep / wake patterns Google TV hot key Support for multiple languages Ergonomic handheld design is easy to carry and operate Application: PC remote control of home entertainment, multimedia education, training, meetings, presentations andControl computer; Car TV, HTPC, big screen TV, smart TV, hard disk player, network player, X-BOX. System Requirements: Windows,Linux,Android/Google/Smart TV/Mac OS Specifications: wireless mouseConnection: RF 2.4G wireless connection Power supply: 1.5V 3A battery(Not Support Lithium Battery) Operating voltage: 3.3V Wireless Transmit Power: 2dBm Receiver sensitivity:-85dBm Color:Black Touch pad: about48x38 mm Dimensions: Approx.146 x 98 x 19 mm Weight: 118 g Package weight:138 g