... on/off switch buttons 1.black colour slim wireless mouse and keyboard combo with nano receiver built in mouse, black ... 2. Nano receiver 3.10 meters working distance, Intelligent auolink, plug & play4.intelligent power saving, no need On/off switch button5. Keyboard ... 457X345X290mm9. OEM is welcome. MOQ 1,000pcs for OEM. high quality cheap price 2.4g wireless and keyboard combo in colour box package