 In this video, we will go over how to use the Zenco Duo with concentrates. Make sure to charge the Zenco base for two hours before use. When fully charged, the button will turn green. Remove the glass and magnetic top. Load your concentrates into the vapor pipe. Replace the magnetic top and glass. To turn on your Zenco, tap the button five times. The button will flash green. The Zenco Duo has four temperature options. To change the temperature, tap the button three times for each level. To heat, tap the button twice. The glass will fill with vapor. Thanks for watching this video on how to use the Zenco Duo with concentrates. Check out our other videos for more great products.