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Citizen Eco-Drive Tsuki-yomi Super Titanium grey dial titanium bracelet 43mm round case

Citizen

Citizen Eco-Drive Tsuki-yomi Super Titanium Grey Dial BY1010-81H 100M Men's Watch

SKU CH-TW23-402C2

Solar-powered titanium watch with sapphire crystal, radio-controlled accuracy and 100 m water resistance

  • Watch movementSolar
  • Product shapeRound
  • Watch face colorGrey
  • Dial markingsIndex
  • Display typeAnalog
  • Date displayDate
  • Solar Eco-Drive movement never needs a battery change
  • Super Titanium case and bracelet weigh less than steel
  • Sapphire crystal resists everyday scratches
  • 100 m water resistance suits swimming and snorkelling
  • Radio-controlled calibre H874 keeps time accurate worldwide

Titanium Case and Bracelet

This Citizen watch uses Super Titanium for both case and bracelet, making it lightweight and hypoallergenic for daily wear. The 43.00 mm diameter suits a wide range of wrist sizes. A grey dial with index markers provides clear analog readability. It is built for buyers who want a durable metal sports watch without the weight of stainless steel.

Eco-Drive H874 Caliber

The Eco-Drive movement converts any light source into energy, removing the need for regular battery changes. Radio-controlled timekeeping adjusts automatically to maintain precision across supported regions. The H874 caliber includes a date display at the three o'clock position. It is not suited for buyers who prefer mechanical winding or a watch that stores multi-year power reserve in total darkness.

Sapphire Crystal and 100m Water Resistance

Sapphire crystal protects the dial from scratches during everyday activity. Water resistance rated to 100 metres covers swimming and surface water sports, but not scuba diving. The fixed bezel and pull/push crown maintain the seal when used correctly. It does not satisfy buyers who require ISO-certified dive ratings or a rotating timing bezel.

How it compares

Measured against everything we stock in Analog & Digital Wristwatches, at today’s prices. Recalculated every night.

Price $508.99
Pricier than about 90% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameCitizen
Design styleCasual
Watch face colorGrey
Item conditionNew
Display
Display typeAnalog
Size & build
Main materialTitanium
Product shapeRound
Strap materialTitanium
Closure typeDeployment Clasp
Bezel typeFixed Bezel
Case constructionPull/Push Crown
Housing materialTitanium
Case size43 mm
Watch glassSapphire Crystal
Environment & compliance
Water resistance100m
More details
Watch movementSolar
Dial markingsIndex
Date displayDate
Suitable forMale

Questions about this item

Will the 43 mm titanium case and bracelet sit comfortably alongside my older steel watches?

The Super Titanium case and matching bracelet are lighter than stainless steel, so the 43 mm profile feels less bulky on the wrist when you switch between pieces.

How can I confirm the H874 Eco-Drive calibre is charging and keeping time correctly?

The seconds hand moves in one-second steps when power is sufficient; if it starts jumping in two-second intervals the cell needs more light exposure.

Does the BY1010-81H include the deployment clasp and sapphire crystal, or must I buy them separately?

Both the deployment clasp and sapphire crystal are fitted as standard; the box contains the watch, manual and warranty card only.

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