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Citizen BM8180-62E Eco-Drive Bracelet Watch - W38425
Ref. BM8180-62E
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Stepping up in the same colour and case shape
The E101 that powers this watch is Citizen's core solar calibre — a movement that charges from any light source, natural or artificial, and holds that charge for six months in complete darkness. No battery to track, no service interval to remember: the watch simply runs. At 36.5mm with a lug-to-lug of 43.5mm, it sits neatly on a narrower wrist without the overhang that catches on cuffs. The matte black dial uses three-dimensional numeric markers and luminous hands — a field-watch layout that reads at a glance and holds up in low light. This bracelet version is the Japan Domestic Market configuration; the same case exists on canvas, but this one arrives from the factory as a tool watch in metal, which changes the register considerably. The brushed bracelet adjusts through both link pins and micro-adjustment positions at the clasp, so finding an exact fit is straightforward rather than approximate. At 103 grams on the wrist it has enough presence to feel substantial without sitting heavy through a long day.
- Reference
- BM8180-62E
- Brand
- Citizen
- Collection
- CollectionCase Size: 36
- Case size
- 36.5mm
- Case thickness
- 11.5mm
- Lug width
- 18mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Black
- Crystal
- Mineral
- Movement
- Solar
- Calibre
- E101
- Functions
- Day-date, Solar powered
- Water resistance
- 100m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Deployant clasp
- Lume
- Luminous
- Retailer
- F.Hinds
Additional specifications
- Lug-to-lug
- 43.5mm
- Warranty
- 5 years
Learn more about Citizen
The Shokosha Watch Research Institute began in Tokyo in 1918, and the Citizen name was given to its first pocket watch in 1924 by the then mayor of Tokyo, Shinpei Goto, who wanted a watch that would be available to ordinary citizens rather than only the wealthy. The company formally took the name in 1930.
That founding intention has held. Citizen is the largest watch manufacturer in the world by volume and is fully vertically integrated, making its own movements, cases, and electronic components.
Its most significant technology is Eco-Drive, introduced in 1976 and refined over decades. A photovoltaic cell beneath the dial converts any light — including indoor light — into stored energy, so the watch never needs a battery change. Citizen has sold well over a hundred million Eco-Drive watches, and the environmental argument is substantial: hundreds of millions of cells not discarded.
The company also produced the first analogue quartz watch with a titanium case in 1970, the first professional dive watch with an electronic depth sensor, and the Caliber 0100, an Eco-Drive movement accurate to within one second a year — the most accurate independent watch movement ever put into production.
Citizen owns Bulova, Frederique Constant, Alpina, and the movement manufacturer Miyota, whose calibres power a large share of the affordable mechanical watch market worldwide.
- 1918
- The Shokosha Watch Research Institute is founded.
- 1924
- The Citizen name is given to its first pocket watch.
- 1976
- Eco-Drive light-powered technology is introduced.
- 2018
- The Caliber 0100 achieves accuracy of one second a year.
Manufacturer’s guarantee
What the specifications mean
Strengths
- 100m water resistance covers swimming and watersports
- 36.5mm suits most wrists
- Luminous hands and markers for low light
- Sits in the lower half of Citizen's range as we list it
Compare alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | BM8180-62E |  SNE525P1 |
|---|---|---|
| Price | £149 | £175 |
| Case size | 36.5mm | 40mm |
| Water resistance | 100m | 100m |
| Movement | Solar | Solar |
| Strap | Stainless steel bracelet | Stainless steel bracelet |
| This watch |
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 100m it is rated for swimming and snorkelling, though not for diving.
Will the glass scratch?
It can, over time. Mineral glass handles daily wear but will pick up fine scratches that sapphire would not.
Does it need a battery?
No. It charges from light, and the cell behind that is designed to last a decade or more.
What size strap does it take?
18mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 43.5mm, which suits wrists from roughly 15cm (6 inches) upward.
Lug-to-lug decides fit more than case diameter does.
Is it a men's or women's watch?
Listed as men's, though at 36.5mm it sits in the range that suits anyone.
Cheapest place to buy
F.Hinds is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
Who are F.Hinds?
F.Hinds has been run by the same family since 1856 and is now in its fifth generation, with more than 115 shops across England and Wales. They are a member of the Responsible Jewellery Council and an Authorised Diamond Dealer.
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