Description/Features: 1.New transparent shell with silent buttons and metal rollers 2.One key can directly return to the desktop, with fast actions and improved office efficiency. 3.Ergonomic design, curvature fits the palm for a more comfortable grip, and smooth lines 4.Plug and play connections are more stable 5.Triple mode connection with seconds to switch as desired Specifications: Color: silver Material:Acrylic Working mode: 2. 4G+BT1+BT2 Working current: 30MA Battery capacity: 500mah DPI: 800-1200-1600-2400 Package Contents: 1 x Mouse 1 x USB receiver 1 x Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.