# Citizen BM8186-07E Eco-Drive Field Watch

Citizen BM8186-07E is a men’s field-style watch that uses Eco-Drive technology to convert natural or artificial light into stored energy. This avoids routine battery changes according to the manufacturer, while customer feedback reports a simple design and good functionality alongside some concerns about strap length.

- [Original product page](https://bargainpostbox.co.uk/product/citizen-bm8186-07e-eco-drive-field-watch)
- [View offer](https://bargainpostbox.co.uk/visit/citizen-bm8186-07e-eco-drive-field-watch)
- Market: UK
- Language: en-GB
- Currency: GBP
- Model: BM8186-07E
- Category: Fashion & Accessories > Watches
- Price: 83.69 GBP
- Previous price: 98.69 GBP
- Discount: 15%
- Price checked: 2026-11-13T05:55:08.473Z
- Rating: 4.4 / 5
- Reviews: 341

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Eco-Drive is described as converting light into energy stored in a rechargeable cell.
- The manufacturer says the watch can charge from sunlight and everyday indoor light sources.
- Customer feedback describes a straightforward field-watch design and good functionality.

## Pros

- Light-powered charging is intended to reduce the need for battery changes.
- Indoor light as well as sunlight is listed as a charging source.
- Reported feedback includes positive comments about durability and long-term use.

## Specifications

### Identity
- Brand: Citizen
- Model: BM8186-07E
- Department: Men's
- Country of origin: China
### Power
- Power technology: Eco-Drive technology powers your watch using natural or artificial light
- Energy storage: permanently rechargeable lithium-ion cell
### Listing details
- Package dimensions and weight: 19.5 x 18.5 x 10.8 cm; 240 g

## Before you buy

- Customer feedback is mixed on fit. Some buyers say the size is not too large, while others report that the strap feels too short.
- The product details list “1 A batteries required. \(included\)”, which conflicts with the Eco-Drive description that says the watch uses a rechargeable cell and avoids battery changes. Confirm the power and battery details for the selected listing.

## A good fit for

- Buyers seeking a men’s field-style watch with a simple design.
- People who prefer a light-powered watch and want to avoid routine battery replacements.
- Those comfortable checking strap fit before purchase.

## Less suited to

- Buyers who need a confirmed strap length before ordering, as none is stated in the supplied details.
- Anyone who requires the listing’s power and battery information to be unambiguous before buying.

## Customer feedback

Customer feedback describes a simple field-watch design, good functionality and perceived durability, including a report of extended use without missing a beat. Some customers consider its size manageable, but others say the strap is too short. For buyers drawn to the stated light-powered design, the reported durability is encouraging, while strap fit remains a practical uncertainty. Aggregate ratings lean positive, but do not explain individual experiences.
- Positive themes: Customers describe the design as simple and field-watch-like.
- Positive themes: Feedback highlights functionality, perceived durability and value.
- Negative themes: Some customers report that the strap is too short.
- Negative themes: Some negative feedback concerns fit.
- Mixed feedback: Customers differ on size, with some finding it not too large and others raising fit concerns.

## Frequently asked questions

### How is the Citizen BM8186-07E powered?
The manufacturer describes Eco-Drive charging from natural or artificial light, with energy stored in a rechargeable lithium-ion cell. The product details also say an A battery is required and included, so the listing’s power information is inconsistent.
### Can it charge from indoor light?
The manufacturer says it can charge from everyday light sources such as indoor fluorescent lights and desk lamps.
### What do customers say about the strap fit?
Feedback is mixed. Some customers find the watch’s size manageable, while others say the strap is too short.

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- [Rotary Men's Heritage Field Stainless Steel Black Leather Strap Watch](https://bargainpostbox.co.uk/visit/citizen-bm8186-07e-eco-drive-field-watch)

## Add-ons

- [ANNEFIT Nylon Watch Strap 16mm 18mm 20mm 22mm, One-Piece Waterproof Military Watch Band with Heavy Buckle](https://bargainpostbox.co.uk/visit/citizen-bm8186-07e-eco-drive-field-watch)
- [Archer Watch Straps - Classic Nylon NATO Watch Bands](https://bargainpostbox.co.uk/visit/citizen-bm8186-07e-eco-drive-field-watch)

## Images

![Citizen BM8186-07E Eco-Drive Field Watch — 1](https://bargainpostbox.co.uk/i/JtKTMiNn7ofunrJ0GLyJM299dzletHmavYpHLuL7K1w9Ufp0UHw46ziyJxSHQ_pHZG89yJCurOp-EaA2zHXLmGOXqyrhv6FrNreAj6i5Lw4T4WqfTzGq113o.jpg)

![Citizen BM8186-07E Eco-Drive Field Watch — 2](https://bargainpostbox.co.uk/i/J7AOkaz6gkAsnMtPAUPx7ft436m0_SBp3FD02jiZbQw14ZtItZX4lJ9pTCughm4bAbrQMXwxldyVQshDN2t7fzyI_gEknJsaKXqfW7tlH0DFkpkTAbCX-PI9.jpg)

![Citizen BM8186-07E Eco-Drive Field Watch — 3](https://bargainpostbox.co.uk/i/GKlHZ1qEWLA24qdMGnvTU5nHAWB3XSCcs_-MxmOURqKAkdQFl7bnSoNfsH8LynmC9FUJIpaaFaOVmdT0n1FfAQXyffC05gVQv1j7gvHElt1kIzPgVBU4t1oG.jpg)

![Citizen BM8186-07E Eco-Drive Field Watch — 4](https://bargainpostbox.co.uk/i/wag1RreJiUJLENos9ngSz1TUE9BynabekBltcmKOsCykub6zKFfzWAHNzME9ZrGWlpMRzaFC-IOL_wJG0xmBrbsd9ZAEULb3dfjSaEpvMLcgal3InYBOrcbF.jpg)