TECKNET Wireless Mouse, 2.4G USB Computer Mouse with 6-Level Adjustable 4800 DPI, Silent Quiet Click，30 Months Battery, Ergonomic Grips, 6 Buttons Portable for PC, Chromebook, Mac - Dark-Grey

【30 Months Battery Life】Designed with the upgraded independent power switches and sleep modes to minimize battery consumption, the wireless mouse can enjoy up to 30 months of use time with only 2 AA batteries (not included). 2X longer battery life than others. 【Silent Click】Silent clicking design for left and right button fits the circumstance for using wireless mouse for laptop in public, such as library, dormitory, office and any other occasions where you do not want to disturb others. 【Plug & Play 】The wireless mouse has a 50ft/15m wireless use range, which reduces interference and delay for you. No need to install any drivers, plug the TECKNET wireless mouse into the device and you are ready to go!