Tsuki-yomi A-T BY1010-57X

The Tsuki-yomi A-T is a 30th anniversary model that pairs a moonphase display with atomic timekeeping. Its 43mm round case is made of silver-tone Super Titanium, a material that's five times harder and 40% lighter than stainless steel. The green dial features black accents and silver-tone touches, with a moonphase window at 6 o'clock. It runs on the Eco-Drive caliber H874, which is powered by any light source and never needs a battery. The case is only 10.87mm thick.

The Super Titanium bracelet uses a fold-over clasp with push buttons. Water resistance is 100 meters, so it's safe for swimming and snorkeling. Functions include moonphase, world time in 24 time zones, perpetual calendar, day-date, and atomic timekeeping via radio control. Visit our Willis, TX showroom to see this Tsuki-yomi A-T in person.