Features: Winter USB heating mouse can regulate the temperature, intelligently timing temperature control. USB safe power supply. 3 temperature levels for your choice, which can be adjusted accoring to your need,with heating on off switch. Suitable for PC, Computer, Laptop, Desktop USB port, as a gift for Student, friends and more. When you are working or playing in cold weather,this heating mouse not just warm your for palm, but also your fingers. Specifications: Material: Plastic Color: Black Buttons: 3 Keys Tracking Systems: Optical Max DPI: 1600 DPI Mouse Size: approx. 11.5x6cm/ 4.53x2.36in USB cable length: 150cm/ 59.06in Note: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is a tolerance in the product size. Package includes: 1x USB Heating Mouse