Constant Temperature Coaster USB Powered Milk Cup Warmer Heater for Home Office Kitchen Color: White, Black, Blue Function: 1. It is safe to use, and the large diameter of the thermostat heating surface is not hot and fully takes care to prevent scalding.2. Lightweight and portable, the small size does not take up space, whether you are traveling at home, it is convenient to carry, it is warm and never leaves your hand.3. Exquisite design, USB isolation pad, unique appearance, providing people with different styles.4. The base can be used for many purposes. Free choice of flat bottom containers, such as ceramic cups, milk cartons, glass cups, etc., can play a constant temperature effect.5. Durable, made of high quality ABS and aluminum, not easy to damage, long service life and can be used for a long time. Specification: Item type: milk cup warmer Material: ABS + aluminum Weight: approx. 94g / 3.3oz Diameter of heated area: approx. 8.5 cm / 3.3in Product size: approx. 10.3 x 10 x 1.5cm / 4.1 x 3.9 x 0.6in Voltage: 5V Current: 1000mA Power: 10W Surface temperature: 90 Package list: 1 x Milk cup warmer Note: 1. Please allow 12cm error due to manual measurement. Thank you for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be slightly different from the actual object. Please take the real one as standard.