I happy this clock for 2 years and am. Simple clean design with no frills. A truly waterproof clock; anytime super read. Thanks to the tritium vials this clock already lit at dusk and the afterglow keeps well without noticeable loss until the next day. So, who wakes up in the morning by 5 clock, can also be read without any problem, it is a 5-clock. The calendar display is also always clear to read, even if not illuminated. Illuminated are: Numbers 1-11 blue, 12 green, all pointers green and the "0" on the adjustment ring in green. The collar can only be counter-clockwise (diving watch). The glass is recessed and protected from scratches. The cover on the back is fixed with 4 screws. The first battery still holds. I use the clock but every day (even in water) - and not just gently ... Conclusion: Absolutely empfehlendwert!
