I have a headtorch like this. Keep it charged and most of the time everything is good. But that one time when I’m out skiing at night and shit goes wrong / I run out of charge it’s OK because I have a couple of AA’s in my bag as spares.

I got the original ones not the fancy new ones on ebay for £112, the cable was broken and the nose pads were missing but I bought some foam pads and a new cable for £15.
Absolutly worth it. They also plug into my phone for watching movies and shows. I work away from home a lot and the glasses along with noise cancelling headphones are brilliant at blocking out all the idiots who’d otherwise think they could talk to me.

I got a pair of the xreal air glasses to use with the deck. Now I have a big screen and I can keep my arms down where they’re comfy. 7/5 would recommend.