Laptone 2.4Ghz Bluetooth Wireless Mouse 1600DPI 6 Buttons Comfort Design Adjustable DPI - Green 2.4G frequency technology, working distance can reach upto 8M-15M Auto Power Off / Sleep when not in use or Computer turns off USB Nano Receiver, Plug & Play 6 Keys,including Scroll Wheel, Page Forward and Page Backward buttons for easy Internet Surfing. DPI button to select favourite cursor speed