1.No need to press the code key, it can be searched automatically. ater you open the power switch.  Also no need to link again when you stard the PC next time.  
2.Bluetooth 3.0        
3.Running work for 3-5days,standby time for 30days,also can be worked when recharged,with Li-battery and USB rechargealbe line.
4.Prevent the "mouse hand" disease effectively.             
5.Working with any interface except glass.         
6.With sleep mode and power switch
7.OS:Windows 98; windows 2000; windows ME; windows XP or Vista WIN7 8 10      
8.Fashion packing box can be used for gift or yourself!