If the bike radar is out of juice, I don’t go until it’s recharged. That’s almost true of the HUD.
And I’m going to cry when that dies, because they don’t make it anymore, and the alternatives are 1) expensive 2) proprietary and 3) made by small companies likely to go out of business. Like I’m going to drop $1k on prescription lenses for a proprietary solution for which I won’t be able to get replacement batteries after a year.