1.Bluetooth 4.0 & 2.4GHz Wireless Mouse Bluetooth mouse made for endurance, versatility, support to connect two devices - Bluetooth/2.4 GHz wireless connection. Easily switch between your laptop and computer, with only a simple click of the switch button, extremely convenience. Note: You can't use Bluetooth mode and 2.4G mode at the same time. 2.Rechargeable Optical MouseBuilt-in 600mAh lithium rechargeable battery can last up to one month after once fully charged, no need to change battery anymore. 3.High Responsiveness and Noiseless Clicks3 adjustable DPI level 1000/1600/2400 to meet your different needs. Passed 5,000,000 times keystroke test to guarantee extra durability. Soundless design for the right and left buttons, wont disturb others 4.Portable Slim Bluetooth MouseWith its compact size and Bluetooth connection, dual modes mouse is the perfect travel mobile mouse to carry around. Slip it in your bag or pocket and use it anywhere to create using pretty much any Bluetooth devices. 5.Wide compatibilityBluetooth mode supports Bluetooth enabled devices with Windows / Android / MAC OS system; 2.4GHz wireless mode works with PC, laptop and any devices have USB port, plug and play. (Note: The USB receiver is stored in bottom of the mouse).