SP31V2.0 LH351D version are available on sofirnlight website

[Lux-Perpetua]

@Barry0892

Actually when some ask “what driver does the flashlight use?”, I don’t know how many kinds of drivers to use! Buck driver? Boost Driver? FET driver? any other drivers? And I can not connect these with what engineer told me, which is Chinese. Anybody teach me?

Barry, please check this link:

https://flashlightwiki.com/Driver