Specifications Voltage: 110V Power input: 350W Temperature range: 0 - 430 Fahrenheit degree Time range: 0 - 240 seconds Temperature correction: -5 ~ +5 Fahrenheit degree Time for heating up?1-3 minutes Mug Heater Size: 6-11oz ?3.1"-3.9" diameter? Steps for printing your digital photo onto mug Step 1: Take a photo and print it into the sublimation paper Step 2: cut the paper in a suitable size Step 3: Put the mug into the machine to adjust the pressure and take it out Step 4: Refer to our manual and set the temperature and time Step 5: Wait for the machine heating up to the target temperature Step 6: Put the mug with sublimation paper in and the temperature will drop sharply. Step 7: When the temperature rise to the target temperature, press the Ok Button. Step 8: When the machine buzz, take the mug out.