With Multimedia Function Keys:YesMouse Connection:WireLess Supports Human Engineering:Yes Applicable Object:For Game Package:Yes Optical Resolution:1000 DPI Keyboard Connection:WireLess Type:ERGONOMIC Products Status:STOCK Interface:USB Origin:Mainland China Certification:CE,RoHS,KC Product Features Connection method: 2.4G Keyboard size: 36.8*14.3*2.63cm Mouse size: 11.6*6.6*3.5cm Keyboard net weight: 428g Mouse net weight: 60g Packing size: 44*15*3.6cm Gross weight: 612g Product material: ABS+PC Transmission distance: Battery: 2pcs of AA (keyboard), 1pc of AA (mouse) Trial system: MAC, Windows, Linux etc 2.4 GHz wireless technology delivers a reliable connection with up to a 10M range No wires make a more smart and tidy desktop. . Unified nano receiver saves precious computer USB ports Very resposive keys in scissor-key-switches Angled tilt provide support Silky-smooth whisper-quiet keys let you enjoy the work without disturb Real compact and slim in fullsize design The keyboard size is 5.5*2.16*14.6in which greatly save space for your desk top and travel You will type in more fast way with numeric keys Low power battery indicators and multi-media hot keys provide convenience Quiet keyboards and mouse set The mouse are provided in silent clicking; no disturbance to you and others Keyboards keys in low profile make much less noise when typing Note : The language keyboard is print the language letter under the English letter , if you have any problem about the language keyboard , please contact us before making order If you need language keyboard set , please contact us before making order Because the keyboard set just has one USB receiver , so when you get it , if you have any problem about it , you can contact us first and we will do our best to help you