Quality assurance integrity first !
Note:
!!!!! The USB receiver is in the bottom of the mouse, installation location of the battery, open the lid you can see it. !!!!!
If the keyboard can not be controlled, do not worry, it is very easy to pair the keyboard with the USB receiver,only need to do the following three steps:
Preparation: Remove the battery and reinstall into the keyboard, unplug the USB receiver.
Steps:
1.Press the 'Esc' and '=' key at the same time, do not release;
2.Insert the USB receiver into the computer within 3 seconds;
3.Release the 'Esc' and '=' key, the pairing is completed.
If pairing is not successful, try several times,and you will surely succeed.(We tested thousands of times this method,it works)
Features:
1. Auto Sleep: Sleep Smart Wireless technology also used in the keyboard and mouse, a period of time without the keyboard and mouse will automatically go to sleep;
2. Smart Connection: just install the battery, plug in the receiver, keyboard and mouse will automatically connect;
3.12 months long life: the use of a new generation of low-power saving technology, without having to change the battery often worry;
4. Waterproof: Waterproof circuit and water holes, if accidentally splashed into the liquid can be effectively leak, ensure the normal use of the keyboard 
