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Citizen Tsuki-yomi A-T

Citizen Tsuki-yomi A-T

SolarTitanium

Ref. BY1010-57H

Case size: 43mmMovement: H874

The Citizen Tsuki-yomi A-T, reference BY1010-57H, has a 43 mm Super Titanium case rated to 100 metres, with 22 mm lugs and faceted edges. World time and a perpetual calendar are joined by weekday and date indications. Sapphire covers the grey dial with luminous hands and indices. The round case measures 10.87 mm thick beside a titanium bracelet with a folding clasp. Eco-Drive solar calibre H874 is charged by light. The moon phase window occupies the lunar-surface-inspired design.

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Last updated 20 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Men

CASE

Diameter

43mm

Thickness

10.87mm

Lug Width

22mm

Case Material

Titanium

Water Resistance

100m

Crystal

Sapphire Crystal

MOVEMENT

Movement Type

Solar

Caliber

H874

DIAL

Dial Color

Grey

BRACELET/STRAP

Bracelet/Strap

Titanium

Clasp Type

Fold Clasp

FEATURES & COMPLICATIONS

DateLuminous handsLuminous indicesMoon phasePerpetual calendarSolar watchWeekdayWorld time watch

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