Wide Compatibilty: Bluetooth mode supports Bluetooth enabled devices with Windows / Android / Mac OS system. 2.4G wireless mode supports all devices with usb port. Fits for PC, laptop, cellphone, Mac. Added forward/ backward buttons provide convenience when webpage browsing. NOTE: Forward/backward buttons will not work on Mac Bluetooth & 2.4G Wireless Connection: This ergonomic mouse has dual connection modes BT 4.0 and 2.4G RF (USB Nano Receiver stored in the mouse bottom), you can control two devices at the same time, switch freely between Android, tablet and Mac with just one button Advanced Ergonomic Design: The ergonomic design places your hand in a natural handshake position and offers your hand maximum support for lasting comfort. Concave area for Thumb and little extended bottom edge for pinky finger, smoother moving and more comfortable grip. Effectively reduces the wrist strain and pain Silent Click & Adjustable DPI: Quiet clicks can bring a better user experience and free your worry about bothering others and keep you stay focused while working. 3 adjustable DPI levels (1000/1600/2400) allows you to change the cursor sensitivity easily depending on your activity and track more smoothly over a variety of surfaces Exquisite & Warranty: It has an elegant rubbery matte finish that provides a nice grip, while resisting fingerprints and smudges. Every Jelly Comb product includes 12-month warranty. If you have problems with product, please contact us to solve it for you