Mice & Trackballs Description:Durable Use: The waterproof mouse uses a ba micro switch and a large scale metal scroll wheel to create a quiet environment.Special Design: Metal wirele mouse has unique electroplating proce design, strong metal texture, beautiful and smooth paint surface.Useful Function: With the ergonomics design of wirele gaming mice, it fits the curve of the hand better, is more comfortable, and has a more advanced appearance.Fine Workmanship: Portable mute mouse has large-capacity rechargeable battery, which can be used for several weeks on a single charge.Meaningful Tool: Optical mouse is an integrated design from the inside out, fully integrated into science fiction elements, giving you a different touch experience. Specification:Color: Black.Material: ABS/Aluminum.Size: Approx. 11.1x6.35x3.4cm/4.37*2.50*1.39in.Wirele frequency: 2402-2480MHz.Battery voltage: 3.7V.Charging input: 5V 500mA. Note:There might be a few color distortions due to different computer resolutions.There might be a slight error due to different hand measurements. Package Includes:1 Piece Mouse.