Features: 2.4GHz Free moving in 10 meters. Nano super Mini receiver.Plug-and-Play. Built-in storage medium,no need re-code after you replace battery. Resolution frequency 800-1200DPI conversion. Built-in Mini receiver design. Power On/OFF function. Specifications: Power Supply: 2 x AAA Batteries (Not Included) Mouse type: Wireless Optical Mouse Interface: USB Button: 5 Buttons + 1 Scroll Wheel Resolution: 800 to 1200DPI Size: 3.94" x 2.36" x 1.38"(L x W x H) Weight: 4.09 oz Rated working Voltage:3.0V Rated working Current:15mA Color:Blue,Red,Silver,Gray,Black Package Included: 1x 2.4G Wireless Mouse 1x Mini Receiver Ships in 7 business days. It is shipped from China. Delivery is provided by China Post Air Mail. Delivery time depends on the couriers, local customs in your country also holidays, weather conditions. Usually it takes from 39 to 60 days, depending on the customs at your country.