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Citizen Eco-Drive Stainless Steel Blue Dial Solar BM7631-87M Men's Watch
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Message Nick →Description
The Citizen Eco-Drive BM7631-87M is a versatile men's watch that combines modern aesthetics with practical, light-powered technology. Perfect for the discerning individual who values both style and sustainability, this timepiece transitions effortlessly from professional settings to casual outings.
Featuring Citizen's renowned Eco-Drive Caliber E111 movement, this watch is powered by any light source, eliminating the need for battery changes and offering approximately six months of power on a full charge. Its sleek design, highlighted by a vivid blue dial and a robust stainless steel construction, ensures it's a reliable and stylish companion for daily wear.
Key Highlights:
- Eco-Drive Movement: Powered by light, never needs a battery.
- Durable Construction: Stainless steel case and bracelet with crystal glass.
- Water Resistant: Suitable for everyday activities with 100m water resistance.
- Vivid Blue Dial: Features clean index markers and silver-tone hands for excellent legibility.
The Citizen Eco-Drive Blue Glow Night styling adds a distinctive character, making it a confident upgrade to any watch collection.
Specifications
- Model/Ref
- BM7631-87M
- Gender
- Men's
- Display
- Analog
- Movement
- Eco-Drive Caliber E111 (Solar)
- Case Size
- 41mm
- Case Thickness
- 9.7mm
- Case Material
- Stainless Steel
- Dial Colour
- Blue
- Crystal
- Crystal Glass
- Band Material
- Stainless Steel
- Water Resistance
- 100m / 10ATM
- Functions
- Date
How it works
What this watch’s key specs actually mean on the wrist.
Solar
Solar-powered movement
A solar cell under the dial turns any light — sunlight or a desk lamp — into power and stores it in a cell that lasts for months in the dark. You get quartz accuracy with no battery changes to think about, ever.
100m / 10 ATM
Water resistance
Rated to 100m / 10 ATM — genuinely swim-ready. Laps, snorkeling and a day at the beach are all no problem; it just isn't a scuba watch.
41mm
Case size
The case measures 41mm across (excluding the crown) — a modern, present size with real wrist presence, at its best on medium-to-larger wrists. Case size is the single biggest factor in how a watch actually wears, so it's worth picturing against your own wrist.
Stainless steel
Case material
Stainless steel is the all-rounder for good reason: tough, corrosion-resistant, and easy to refinish if it ever picks up a scratch. 316L is the marine-grade alloy used across quality watchmaking — durable enough for daily life and smart enough to dress up.
Frequently Asked
What type of movement does the Citizen BM7631-87M use?
The Citizen BM7631-87M features an Eco-Drive Caliber E111 movement, which is solar-powered and charges from any light source, eliminating the need for battery changes.
Is this watch suitable for swimming?
Yes, with a water resistance of 100m (10ATM), the Citizen BM7631-87M is suitable for everyday life, including hand washing, showering, and recreational swimming.
What is the case size of this Citizen watch?
The Citizen Eco-Drive BM7631-87M has a comfortable 41mm stainless steel case, which wears slim at 9.7mm.
What material is the watch band made from?
The watch band is made from solid stainless steel, providing a durable and timeless look.
Does the watch require a battery?
No, the Citizen Eco-Drive technology powers the watch using light, so it never requires a traditional battery replacement.
Who is this watch designed for?
This watch is designed for men who appreciate a blend of modern style, practical features, and sustainable technology, suitable for both work and casual wear.
This piece ships through our authorized dealer network. Any applicable customs or import fees are collected up front at checkout, so nothing extra is owed when your order is delivered.
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