RECHARGEABLE CONVENIENCE-Both keyboard and mouse are rechargeable via supplied Micro USB cable and a single charge will last up to 2-3 months(based on daily use). The intelligent auto-sleep function and on/off switch on both device are a great bonus to keep your battery life | ULTRA SLIM & COMPACT-This is a lovely and slim wireless keyboard mouse with 99 keys. It has almost all the functions you need like Num lock, volume control, number pad, calculator and some fast access keys. With ultra-compact size(about 2/3 as big as your traditional keyboard), this saves more space for your small and busy desk | LOW PROFILE KEYS& SILENT MOUSE-The keyboard is not really whisper-quiet,but it is definitely much quieter than your traditional keyboards. The low profile keys and scissor-switch structure design also provides you with a remarkably comfortable experience. You will also receive a keyboard cover to keep your keyboard dust-free | PLUG & PLAY-Installation is super easy, just plug the USB receiver into your computer port and you are ready to go. The 2.4G advanced technology boost a range of up to 26ft, now you can enjoy wireless typing without wire | LIFETIME WARRANTY- This small wireless keyboard mouse combo comes with lifetime product warranty, if you ever received a defective product, pls contact us for help, we will resend or refund in a timely manner.This keyboard is compatible with Windows 2000, XP, Vista, Win 7, Win 8, and Win 10. NOT compatible with Mac, OS System