Ergonomic Cordless Mouse That Fits the Palm of the Hand Perfectly. Great Wrist Support for Long Hours of Working & Gaming. the Mouse has 3 Dpi Settings (800 & 1200 & 1600) for All Sensitivity Requirements. the Built-in 400mah Rechargeable Li-on Battery Provides Up to 20 Hours of Use with LED On. When Decorated with Laser Engraving the Logo Will Light Up & Shine. Abs Plastic. Minimum Quantity: 50.