?Rechargeable for Greater Environment?This Rechargeable wireless mouse with 300 mAh lithium battery which only takes 1-2 hours to get itself fully charged can continuously function to 30 days for daily use and last about 12 months in standby mode, so you don't need to frequently charge it or replace its battery like other wireless mouse or rechargeable mouse. ?Silent Mouse No Clicking Noise?The silent wireless mouse clicks and the scroll wheel are very quiet and soft. When pressing buttons, you don’t need to worry about bothering others no matter at home or office, therefore, you can stay focused on your work. ?Improve Working Efficiency?The wireless mouse which is constructed with side buttons(backward & forward buttons) and 5 adjustable DPI levels (800-1200-1600-2000-2400) can highly improve productivity and efficiency. ?Ergonomics Design Fits well into the Hand?The left/right buttons is separated from the upper cover, which makes its click easier and more durable. Adopted with skin-friendly frosted material and a thumb concave will deliver a comfortable hand feeling and help reduce hand pressure. ?Wide Compatibility and Product Service?Widely compatible with all PC, computers, laptops, Macbook. NOTE: Forward and backward buttons are not available on Mac OS devices.