Yocan ZEN

No, the device is designed solely for concentrates. An exposed coil is intended for wax-like consistencies; plant material would burn on it instead of vaporising and would leave residue that is difficult to remove.

2.8, 3.2 and 3.6 volts. Because the voltage is controlled rather than the temperature, there is no display showing degrees. The same button used to switch the device on and off changes the setting; its illumination indicates the active setting.

Around one and a half hours for a full charge, at 5 volts and 0.5 amperes via the USB-C port. Capacity: 650 milliampere-hours, built in and not replaceable.

Ceramic and Diatomaceous Earth — ceramic combined with diatomaceous earth. Because this material is porous, it absorbs the concentrate instead of allowing it to rest on a smooth surface; as a result, the flavour remains stable for longer than with quartz. Measured resistance: 1.6 ohms.

Four points distinguish the two devices despite their identical battery capacity: coil material (quartz in the Evolve, ceramic with diatomaceous earth in the ZEN), charging port (micro-USB versus USB-C), power control (fixed versus three settings) and cut-off time (ten versus thirty seconds).

Around three seconds after pressing the button. Exposed coils for concentrates reach their operating temperature considerably faster than enclosed herb chambers, which generally take half a minute.

It is an overheating safeguard and standard on dab pens. The limit is rarely noticeable because a single draw generally lasts less than ten seconds. Simply release the button; the device is then immediately ready again.