If you have any issues about using Yocan Keen,
please contact our after-sales service, here is the link to go through: https://www.yocanonline.com/warranty-af ... s-service/

Main Features of Yocan keen:
*1.0ml tank
*Ceramic Heating Coil
*Stainless steel housing
*400mAh rechargeable battery
*Type-C charging port
*🥳Voltage Choice: 3.0V, 3.7V, 4.2V