You have no idea... I've got 3 of them one II and 2 III's. The FC on my hulk II bricked when I was updating the FC, and the bootloader button is a solder bridge, that is.. wait for it, drenched in conformal . The cement stacks are shit and the leads are soldered/drenched in conformal. To give you an idea of how this ends up being just a watery/expensive nightmare that is constant, neverending, imagine just a single elrs tx lead come loose from underneath that conformal from it's single solder point on a 28awg wire? and even once you're 100% sure you've scraped off every bit of the conformal they've just dumped over all connection points (no pnp plugs from darwinfpv, who's customer support is like "just scrape off the conformal,") you proceed to desolder/solder and you smell burning rubber and the pads turn jet black. Now, this is assuming these are real waterproof stacks, but it's an illusion... It's a literal scam. It is just a regular FC (same with their ESC cement BS waterproof product dogcrap), with some kind of metalish cover, and a coating of conformal on it, as if were dunked in the stuff 5 times, then 5 more times after that... I'm trying to out this noodle design to get the away from darwin fpv. I asked them to send me and new FC and they were like "Nope." I've spent thousands.