i8 Mini Wirele keyboard backlight English Ruian Spanish French PortugueseAir Mouse 2.4GHz Wirele Keyboard Touchpad Handheld for Android TV Box PC 1, battery version: Lithium battery version , it includes 1pc rechargeable lithium battery, it can use slow charger to charge it, can not use fast charge,it also can charge by usb cable 2, how to turn on the backlight? each backlit keyboard has 7 types backlit. a,"Fn"+"F2" to open 3 types backlit b, "FN"+"F2" open backlit model,and then pre "Fn", swipe left and right with your fingers Touch the lower part of the touchpad, it can switch 7 types backlit. 3,how can i change the language? answer: you need to set your device's(smart tv/android box,ect) physical keyboard match with the keyboard that you buy. for eample h96 max android box: firstly, connect usb receiver to the h96 max,turn on keyboard Secondly, clink settings-Device preferences---more settings---System---Languages & input---Physical keyboard---2.4G Composite Device---SET UP KEYBOARD LAYOUTS---ruian/french/spanish/Portuguese/English PS: French customsers can install AZERTY.app to your device directly on web or goolge play. Notice:there are many android tv boxes/ smart tvs in the world, the detail setting physical keyboard steps needs to ask your device supplier, if you set your device physcial keyboard layouts and supports third party physical keyboard,it 100% works. 4,how to repair the USB receiver? Answer: insert usb to computer usb port, The distance between the USB receiver and the keyboard cannot exceed 1 cmpreing FN+F1 3 seconds.the yellow light not flash means connected. 5,How to adjust the cursor speed ? Answer: Preing FN+Speace to speed up and down. - Backlit Keyboard Languages Version (Optional) English/Ruian/Spanish/French/Portuguese Versions - Wirele mouse 2.4G Wirele Connection Range: Radius 3 m - Mini QWERTY 92-key keyboard multimedia control keys and PC gaming control keys - The Air mouse cannot use on LG and Samsung TV( Smart TV)/Xiao mi box. - Fn+F2: Open or Close Keyboard (Backlight/ Backlit) or Change Backlight color - Fn+ Space: Speed up the mouse move - Fn+ F11: Full screen to browser - Fn+F1(RF): Activation keys Support System: - Windows 2000.XP. Vista.Windows CE.Windows 7 Android - Mac OS X. Android 3.0 - Linux (Debian-3.1. Redhat-9.0 Ubuntu-8.10 Fedora-7.0 tested) package include: 1 x Wirele keyboard 1 x Wirele receiver 1 x User manual 1 x Rechargeable lithium battery (include) 1 x USB charge cable(only can use slow charger,can not use fast charge) Retail Box Notice: 1,