Bluetooth 4. 0 & 2. 4GHz wireless dual-mode VicTsing unlike most traditional mice, this wireless mouse comes with dual mode -- Bluetooth mode and 2. 4GHz wireless mode; MacBook Pro/ Air/ Win8/ Win10/ Mac, Android works perfectly with Bluetooth mode without the need of a receiver and needless; (note：win 7 is not fully compatible) 2. 4GHz mode compatible with almost every computer and laptop that with a USB port. 5 adjustable DPI values DPI (2400/2000/1600/1200/800 dpi)levels TO suit both ordinary and gaming needs. The default value is 1200 & you can press DPI button to switch. 6 buttons design (left/right button, scroll wheel, DPI/mode switch button, forward/backward button) can meet most people’s needs. Comfortable & durable ergonomic design Bluetooth Cordless mouse with larger soft rubber finger rest area minimizes hand-fatigue. Frosted surface makes it sweat proof & anti-slip. Tested over 5 million times keystroke lifespan ensures long-term and stable use. Low power consumption save power and keep convenient using, the mouse will fall asleep after 10 minutes no-operation, when you reuse it, just click any button, it will wake up. 12- month Battery lifespan (powered by a 1 x AA 1. 5V battery, which is not included) Broad compatibility capable for connecting two computers in different mode and switch between them. You can connect MacBook or laptops with Win8 or above via Bluetooth mode and connect other desktops or laptops by 2. 4GHz mode. Note: you can't use Bluetooth mode and 2. 4GHz at the same time. Just click DPI button for 3S to wait for the flashing LED indicator, and then switch free to control them respectively. ▲The default connection mode is Bluetooth mode when used for the first time.