Feature:1. Vertical design effectively release the pressure of your hand and wrist.2. Ergonomic Design,elegant contoured shape seamlessly supports your palm, featuring more flexible and smoother movement, alleviating wrist tension and eliminating wrist joint\u0027s fatigue.3. Smooth pads,flat and smooth pad made of special material. Never lose control and abrasive resistance has been improved greatly.4. Skin-friendly Surface,use rubber oil coating for preventing sweatingfingers slide.5. Wired mouse,suitable for office or home use.Specification:Features:Vertical design effectively release the pressure of your hand and wrist.Ergonomic Design,elegant contoured shape seamlessly supports your palm, featuring more flexible and smoother movement, alleviating wrist tension and eliminating wrist joint's fatigue. Smooth pads,flat and smooth pad made of special material. Never lose control and abrasive resistance has been improved greatly. Skin-friendly ,use rubber oil coating for preventing sweating fingers slide. Wired mouse,suitable for office or home use.Specification:Material: ABSColor: BlackEngine: OpticalNumber of Keys: 3Connection: WiredRating: 5V 100mAItem size: 12* 7 * 7cm / 4.7 * 2.8 * 2.8in(L * W * H)Item weight: Approx. 100g / 3.5ozPackage size: 13.2 * 7.2* 9cm / 5.2* 2.8* 3.5in(L * W * H)Package weight: 130.5g / 4.6ozPackage list:1 * Optical MousePackage List:1 * Optical Mouse