ProtoArc EM03 Wireless Bluetooth Trackball Mouse Rechargeable Ergonomic RGB Backlit Rollerball Mice for Windows Mac iPad Item Description Gross Weight:230g Operation Mode:Trackball Power Type:RECHARGEABLE Number of Buttons:4 Number of Rollers:2 Hand Orientation:Right Package:Yes Style:Trackballs,Backlight DPI:1600 Interface Type:USB Type:2.4Ghz Wireless Brand Name:ProtoArc Origin:Mainland China Certification:CE 5 DPI levels:100/200/400/800/1600 DP Design:Ergonomic triple connection modes:Bluetooth and 2.4g Feature1:Rechargeable Feature2:Soundless Feature3:LED Lights Feature4:Trackball Feature5:Plug and Play Feature6:4 RGB Lighting Mode Feature7:Noiseless Clicking Feature8:Wireless Index Finger Trackball Feature9:Ergonomic Mouse Feature10:Wireless Mouse Feature11:Mouse For Computer Feature12:Wireless Computer Mouse Feature13:Mouse Ergonomico Vertical Feature14:Wireless Vertical Mouse Feature15:2.4ghz Wireless Mouse Feature16:Mouse Ergonomico Feature17:Laptop Accessories Feature18:Pc Mouse : INDEX FINGER TRACKBALL Equipped with a 44mm trackball, move your cursor with one finger movement instead of moving your wrist and arm. It will effectively reduce fatigue and strain for your wrist and arm. Ergonomic Design The design of the ultra long hand rest allows this mouse to fully fit your palm, it can reduce arm strain and keep your hands in the most comfortable position at all times Whisper-quiet Click 5 DPI levels (100/200/400/800/1600 DPI) Rehcargeable Mouse Equipped with build-in rechargeable battery, no need to replace the battery, you can recharge the mouse easily with the Type-c cable included in package One mouse for three devices This trackball mouse has triple connection modes. You can control three devices at the same time, Trackballs in different positions ProtoArc EM01 keep your palm in a nutural position ProtoArc EM03 free your thumb and wrist Please Pay Attention Before Placing Your Orders: After long-term use, please remove the trackball and wipe with a soft cloth to ensure the trackball roll smoothly; The backward and forward button is not fully compatible with Mac OS; Press and hold the scroll wheel and the right button simultaneously for 5 seconds to change DPI; The mouse can be connected with 2.4G (USB dongle) + Bluetooth1/Bluetooth2 (without the dongle); ProtoArc Warranty Service ? 24 Hours Delivery Most items will be shipped within 24 hours. ? 1 Year Warranty All products have 1 year warranty from our store. ? 24 Hours Online All emails will be answered with in 24 hours. Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return 25 days from delivery date but product should be in original condition.