Yocan Kodo Pro Batter (Yellow)

10 SEC PREHEAT FUNCTION In the power-on state, click the button 2 times to start the pre-heat function. Then the OLED display will stay on for 10 seconds at 1.8V. Or press the button 2 times to turn off this function. VOLTAGE RANGE: 1.8V-4.2V The Kodo pro has a comprehensive voltage range. The adjustable voltage range is from 1.8V to 4.2V.Notably, its voltage can be accurate to 0.1V. Simply press the left (-) and right (+) buttons to get the finest and desired voltage setting.