This article concerns Vein Angel 4 and Vein Angel 6.
The Vein Angel 4 and Vein Angel 6 time dials are not mechanical "egg timers". This means that the knob does not turn back to zero with time, but remains at the set time. Nevertheless, the application ends after the set time has elapsed.
The knob for setting the application duration is an electronic timer to prevent wear and tear of mechanical parts.