WARM TIPS: 1.Color of the machine is random according to the ones in stock.2. The heating process of the heat press machine is intermittent. Heating up for a while, the dashboard will judge whether it's necessary to continue heating up. 3. It is normal to cool down during heat transferring as the heat is absorbed by the tumbler, and the temperature will drop immediately, but it will continue to heat up. 4. The heat press machine should not be heated up without tumbler, customer had better put tumbler in it at the beginning. Let the tumbler and machine heat up at the same time, by doing this, it could extend the mug wrap lifetime. 5. Suggest parameters of the heat press machine: P=80, Ar=60, Cr=30, Pt=20, T=5.6.It is normal for the machine to have gaps, so that there will be pressure. 7.The straight tumbler can do the full print. We suggest change the position of tumbler and press again to avoid bad print. mug press for 20oz/30oz Skinny Tumblers Mug Cup Heat Press Description: Item Name: Mug Press for 20oz/30oz Skinny Tumblers Mug Cup Heat Press Power: 550W Voltage: 110V Temp. System: Celsius & Fahrenheit Temp. Range: 0-420℉, 0-200℃, Suggested temperature is 365℉/185℃ Time Range: 0-999 Seconds Mug Heater: CH1924 Suitable for 20oz skinny tumblers, straight mugs and tumblers with a diameter of 3" (7.5 cm), and up to 9" (23 cm) high Suitable for 30oz skinny tumblers, straight mugs and tumblers with a diameter of 3.3" (8.5 cm), and up to 10.6" (27 cm) high