Recharge 2.4Ghz Wireless 1000DPI Finger Ring Optical Mouse for PC Laptop Desktop with Wireless Receive Built-in rechargeable 180mAH lithium batteries.15 hrs of continuous use after a singer charge for 2hrs.The cordless, USB Nano-dongle is so small and unobtrusive, you can plug it into a USB port and forget about it. Just leave it inside your PC at all time so the mouse is always ready to use. The mouse adopts high-performance 8bits MCU and 2.4G RF chip, which makes sure the mouse having stable working property. Fit Models:ALL notebook ,laptop tablet,Desktop PC. Mini Cute Wireless Finger Rings Optical Mouse 1000Dpi 24 hours online services.30-Days Money Back Guarantee,12-Months Warranty.