The moisture meter can quickly measure the moisture content of the grain. 1. [PI heating method] Ceramic glass panel cup warmer, PI heating method, versatile surface heating, high thermal conductivity. 2. [3 temperature settings] Coffee cup heater You can set a constant temperature of 55 / 131 , 70 , 90 , 110 (158 , 194 , 230 ). 3. [Power Supply] Cup warmer 5V power supply, safe and stable, touch the power supply to turn on. 4. [Easy to carry] the tea warmer is small and has great adaptability. It can be used in ceramic mug, glass mug and metal mug. 5. [Smart Control] The USB cup warmer is intelligently controlled and you can touch it to remind you to drink water every hour. Specification: Item Type: Cup Warmer Material: plastic Size: approx. 132x118x20mm / 5,2x4,6x0,8 inch Rated Power: 10 W Rated Voltage: 5 V Rated Current: 2A Usage scenario: connected converter, computer, mobile power supply List of packages: 1 x Cup Warmer Host 1 x Data Cable 1 x Manual Note: Please refer to the instruction manual in the manual.