https://www.ecigclick.co.uk/hengling-qtank-preview/
Hengling Qtank Preview - Dual Flavour Tank! - Ecigclick
Jul 7, 2019 - The Hengling Qtank is an interesting tank with 2 chambers and 2 coils. Simply "gyrate" (??) to switch between flavours or use both together!
previewdualflavourtankecigclick