Type 2.4Ghz Wireless Interface Type USB Number of Buttons 6 DPI 1000-1200-1600DPI Style Programmable, backlit, Mini, Liquid Tracking Method Optical Number of Rollers 1 Application Desktop, LAPTOP Hand Orientation Both Hands Brand Name Havit Model Number MS65WB Ergonomics Yes Size 102*64*35mm Wireless Distance 10m Key life 3,000,000 times Resolution 1000-1200-1600DPI lithium battery 500mAh product weight 76g key number 6 Material ABS