Just email-chatted with Customer Service at WatchBuys.
I was asking if the Sinn U1 black bezel models (re: U1-T SDR Fully Tegimented model) had lume in the bezel numerals/indices, or was it simply white paint.
The first response I received was "I am confused by the word bezel."
(We finally got it figured out, . . . to some extent anyway.)