Wireless Mouse (JetTech 7500, 2.4 GB), Black,Left key, right key, wheel button with complete functions, with gilding nano receiver To save battery power. The key is very durable for use. Just by moving the cursor, you can easily change websites forward, backward and close functions. you can stretch your hand freely; even long-time grasp of it, you will never feel tried to operate. Gilding nano receiver makes the electrical conductivity more efficiently