What does one UWOO Y1 kit include? One UWOO Y1 kit includes one device, one USB cable, one brush, one specialized spoon, one certificate of approval, one instruction, and one warranty card. How long can I use one full charge? Adopting the 3200mAh large battery system, the UWOO Y1 heat-not-burn device is capable of 40 consecutive uses one full charge. How long does the charging talk? The charging will take around 3 hours because it’s a large battery. How many puffs does one tobacco stick come out? For one tobacco stick when the battery is full, you can hit around 14 puffs. What’s the heating element, and how long does the preheating take? The UWOO Y1 is equipped with the spiculate alloy heating element and the preheating process takes just around 15 seconds. And it will give an alert when the preheating begins and finishes. Can I use it at different working temperatures? Yes. The UWOO Y1 device support 4 working temperature grades from 305-345°C, hence you can set it with the temperature grade with your taste. How to clean the device chamber after I use it? 1) Remove the upper shell, then clean the chamber with the spoon and brush. 2) Self-cleaning: Press the power button 7 times in two seconds, the motor vibrates and the four light flash. Until the motor vibrates again and the four lights go out, the self-cleaning is completed.