backlight color has a different color order, the specific light color is subject to the real thing.the gaming mouse has colorful breathing lights,provides wonderful light effect when you use it.bt4.2 direct connection,the mobile phone can be played by connecting to the keyboard bt signal in one step,convenient to use.high-speed bt protocol connection ensures smooth operation without delay.built-in preset keys,and you can customize the keys according to your own habits,suitable for game lover. game key freely set built-in preset keys,and you can customize the keys according to your own habits,suitable for game lover. complete official key preset built-in key preset,iphone/tablet full model match.most models of android have been adapted,and other models automatically recognize presets based on resolution. ergonomic design the surface shape of the palm rest is designed according to the wrist posture when the player presses the button.it fits comfortably and relieves the pressure on the wrist,provides more comfortable use feeling. two-in-one the keyboard is the throne,plug and play after connecting to the bt. metric key layout traditional ergonomic keys,no need to re-adapt to the layout. specification: brand: hxsj model: k99 color: black material: abs mouse size: 12.5 * 6.4 * 3.8cm /4.92 * 2.52 * 1.5in(l * w * h) mouse weight: approx.105g /3.7oz cable length: 140cm keyboard size: 25.5 * 17 * 3cm /10.04 * 6.69 * 1.18in(l * w * h) keyboard weight: approx.278g /9.81oz package size: 28.5 * 28.5 * 5.8cm /11.22 * 11.22 * 2.28in(l * w * h) package weight: 550g /19.4oz package list: 1 * one-handed keyboard                                                  1 * wired mouse 1 * usb cable 1 * mobile phone holder 1 * user manual