Jelly Comb [ Whisper-Quiet Series ] Wireless Bluetooth 3.0 Mouse - High Pecision & Reliable - 1000/1500/2000 CPI - Battery Operated (2 AAA Batteries, NOT Included) EXQUISITE DESIGN: BluetootINTELLIGENT: The mouse will go into sleep mode without use for 5-10 minutes for power saving, and you can click any button to wake it up.h 3.0 Wireless Connection, range up to 14 meter. CONVENIENT: No USB receiver is needed if your devices come with integrated Bluetooth hardware.?A Bluetooth dongle is needed If your devices don't come with integrated Bluetooth hardware. (Bluetooth dongle is not included in this item.)? ERGONOMIC DESIGN: Portable, lightweight and slim design with LED indicator lights on the top. LESS NOISE and RECHARGEABLE: Mute design keeps away annoying clicks and rechargeable batteries (included in the package) allows you to use the mouse many times.