This is a Citizen Eco-Drive Watch. This has tachymeter and perpetual calendar till 2100, which adjust date automatically. This watch consists of all the calendar features. So this called Citizen Calendar Watch.

A tachymeter is an instrument for measuring speed or units. In watch making, a timer or chronograph watch with a graduated dial shows speed in kilometers per hour or some other unit (see timer).

It has Date display, month display by second hand. Leap year display by function hand (years elapsed from most recent leap year). Citizen Mens Watches are a citizen dive which never changes a battery. So we can also call Citizen Eco Watches. Watches Citizen is powered by light indoors or outdoors.

Eco Drive Watch is 210 days power reserve (i.e. will work for 210 days without any exposure to light). Citizen Mens Watch is having a function of insufficient charge warning. The working caliber of this watch is E812. This citizen eco drive titanium is having Titanium case and bracelet. This Citizen watch is Water resistant to 200m. This watch has the chronograph function by which the user can measure the elapsed time in 1/20th seconds up to 60 min. It has Silver tone markers and Silver tone hands with lumibrite. Citizen watches is made up of Scratch resistant crystal it means the covering of the watch dial is in crystal.

Citizen Eco Drive has facility of alarm, Alarm with 24 hour clock, alarm monitor and alarm ON / OFF. The diameter of this watch is 45 mm including crown, and the thickness is 13 mm. The total weight of this watch is 115 g.

Citizen Ladies watches

Features:

Perpetual Calendar till 2100- adjusts date automatically
Date display
Month display by second hand
Leap year display by function hand (years elapsed from most recent leap Year)
Eco-Drive: Never change a battery. Powered by light: indoors or outdoors.
210 days power reserve (i.e. will work for 210 days without any exposure to light)
Insufficient charge warning function
Calibre E812
Chronograph (60 minute measurement, 1/20th second units)
Silver tone markers with lumibrite
Silver tone hands with lumibrite
Titanium case and bracelet
Water resistant to 200m
Scratch resistant crystal
Alarm with 24 hour clock, alarm monitor and alarm ON/OFF
Water resistant: 200m

Dimensions:
Diameter: 45mm including crown
Thickness: 13mm
Weight: 115g

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