Features: 2 temperature levels for your choice, which can be adjusted accoring to your need, and then remains constant after reaching the most suitable temperature. Not only a mouse, but also a healthcare mouse, massager, and hand warmer. 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: 4 Keys Mouse Size: approx. 130x65x40cm/ 5.12x2.56x1.57in Interface: USB Buttons: Left Button, Middle Button Scroll Wheel, Right Button, DPI Button Maximum Tracking Speed: 30IPS Maximum Acceleration: 8G Maximum Resolution: 600- 800-1000dpi Working Voltage: 5V 0.5V Working Current: 500MA 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