The Sigelei Zmax V2 and V3 have the same electronics and firmware and offer the same performance and functions as the Sigelei Mini. In addition, the Mini is no shorter than the V3 or V5 when equipped with the same 18350 battery.
The Sigelei Zmax V5 offers the same 33.3Hz chip as the V2, V3 and Mini. However, the V5 offers additional functions. The firmware is different, it has a two line OLED display when fired instead of one line, it has a cell phone charger, shows current when fired and has a puff counter. The V5s feature nine menu function instead of eight.
There are all kinds of trim variations on the Sigelei Zmaxs. Too many to keep track of.