1. Six buttons wireless optical mouse +HUB receiver 2. This is a suit of CPI adjustable wireless mouse that completely accords with God's image engineering design.(400,800,1200). 3. Wireless mouse adopts 27MHZ wireless digital technology. 4. Every channel of receiver has 256 ID; it will not be interfered to use two wireless mice at the same time in a very short distance. 5. Wireless mouse adopts advanced optical orientation technology, wise saving capacity design, the life of battery is longer, and orientation is more precise. It can be used on any not reflecting surface. 6. Charger of wireless mouse adopts artificial intelligence design; the battery will stop charging when it is full charged. 7. Wireless mouse have strong driving, so let your work and entertainment more convenient. 8. The compatible systems: Win98, ME, 2000, XP, VISTA 9. The exterior size of wireless mouse and receiver Mouse:102.5 x 64 x 38.5mm Receiver:75 x 55 x 15mm