Features: 1.SUITABLE FOR M40 AIR P30HD: Wireless keyboard case for M40 Air P30HD with 11 inch keyboard has more keys and wider keys for a better experience. 2.PORTABLE AND SLIM: Tablet keyboard case set is lightweight, portable and slim, so it's easy to take with you on your travels or business trips. 3.MATCHING USE: Keyboard leather case set can be used with smartphones, tablets, laptops, desktop computers. 4.WATER AND DUST RESISTANT: Keyboard PU case is waterproof, dustproof, with quiet keys and a scissor type keyboard for fast typing and a good feel. 5.TOUCHPAD FUNCTION: Keyboard case with touchpad function, so you can get rid of the dependence on the mouse, better operation of the keyboard. specification:Item Type: Keyboard Leather Case Set Material: Imitation Leather, ABS Keyboard Parameters: Bluetooth 3.0 Within 10m/32.8ft: Effective Operation Can Be Achieved Modulation Mode: GFSK Operating Voltage: 1.8-3.6V Operating Current: