In the past few years, we have covered plenty of awesome Nixie clocks here. The Vulcan Nixie Watch is also worth a look. It has an accelerometer to detect when you raise your hand to display time in 24-hour format. 6 different transition animation settings are available (default, fade, cross-fade, slots, random, neon flicker, glitch).
Vulcan is water resistant. It can be charged wirelessly. The battery lasts for a week.
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