Features: Made of high quality aluminum alloy material, safe and non-toxic, odorless and healthy. It can be used to heat your milk, tea, coffee and so on. Lightweight and portable, easy to carry, it will not take up much space. It can be used repeatedly and durable for long time use. 3 gears for temperature adjustment. Suitable for school, dormitory and office, easy to use the pillow. Specifications: Product Name: USB heating pad Material: Aluminum Alloy + Tempered Glass Color: Silver, Gold, Black Size: As Shown Voltage: DC 5V/2A Power: 8-10WSwitch: Touch the button Safety protection: automatic shutdown after 8 hours of work Instructions for use: 3 heat switches.1, Press the button for the first time to turn on the high gear, and the red indicator light will light up2, Press the button again to turn on the middle gear, and the blue indicator light will light up3. Press the button for the third time to turn on the low gear, then the green indicator light will turn on Package Included: 1 pc Note! Due to the different monitor and light effect, the actual color of the item may be slightly different from the color shown in the pictures. Thanks! Please allow 1-2cm measuring deviation due to manual measurement.