CK0196B Features The front is wireless keyboard and the middle is touch pad With scroll wheel function (press the FN key at the lower left corner and draw in any direction with another finger to perform scroll up and down of the computer screen scroll bar) There’s left and right mouse button， Fn + W， A， S， D keys(up and down， left and right)， PPT flip up and down keys (at the side)， laser pen laser light key， white light key， money detector lights key at the bottom of the screen FN is a multi-function key， press it while inputting can perform blue word input， press FN key and F3 key while playing music and perform mute function， press FN key and up and down arrow keys below the touchpad can perform page flip function， press FN key and ALT key can perform touchpad 90 degrees conversion， press them again to normal horizontal use Turn on and turn off the backlight after connected to computers General Specs Model 160RF Type 2.4G mini keyboard Backlight Yes Light Indicator  Charge indicator， battery indicator and uppercase status light (from left to right) Keyboard Standard  69 keys + touchpad Operation Range  Up to 10 meters  Transmission Power  4 db Operating Voltage 3.3 V Input 5 V Operating Current  < 50 mA Charging Current  < 300 mA Sleep Current   < 1 mA Rated Voltage DC 3 V Voltage Range 2.3 V-3.6 V Ambient Temperature  0-70 ° C Storage Temperature  -65-150 ° C Work Range  > 8M Low-Pressure 2.5 V Infrared Distance > 6 M Battery Replaceable rechargeable lithium-ion battery Package Details Weight: 294.25 g Size: 18.5*9.2*4.2 cm Package Includes * 2.4G Mini Wireless Keyboard