Watch
Citizen Promaster GMT Stainless Steel Black Dial Eco-Drive Diver's BJ7150-50E 200M Men's Watch
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The Citizen Promaster GMT Stainless Steel Eco-Drive Diver's BJ7150-50E Men's Watch is an exceptional timepiece designed for the modern adventurer and frequent traveler. Combining purposeful design with robust functionality, this watch is perfect for those who demand reliability and style, whether navigating the urban jungle or exploring remote landscapes.
Featuring Citizen's renowned Eco-Drive technology, this watch is powered by light, eliminating the need for battery changes and offering approximately 9 months of power reserve on a full charge. Its durable stainless steel construction and impressive 200-meter water resistance ensure it can withstand the rigors of daily wear and various activities.
The practical GMT functionality allows you to track two time zones simultaneously, complemented by a convenient date display, making it an indispensable tool for globetrotters. The highly legible black dial, protected by a tough crystal with anti-reflective treatment, ensures clear reading in all conditions.
Key Highlights:
- Eco-Drive Technology: Powered by light, never needs a battery change.
- GMT Functionality: Track two time zones simultaneously.
- 200m Water Resistance: Suitable for swimming and diving.
- Durable Construction: Stainless steel case and bracelet with tough crystal.
- High Legibility: Black dial with clear markings and anti-reflective treatment.
Specifications
- Model/Ref
- BJ7150-50E
- Gender
- Men's
- Display
- Analog
- Movement
- Eco-Drive (B878 Caliber)
- Power Reserve
- Approx. 9 months
- Case Size
- 39.5 mm
- Case Material
- Stainless Steel
- Dial Colour
- Black
- Crystal
- Tough Crystal with Anti-Reflective Treatment
- Water Resistance
- 200m / 20ATM
- Band Material
- Stainless Steel
- Clasp
- Fold Over Push Button Clasp
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.
200m / 20 ATM
Water resistance
Rated to 200m / 20 ATM — a true dive-capable rating. It handles swimming, snorkeling and recreational scuba diving without a second thought.
24-hour reserve
Power reserve
Fully wound, this movement stores about 24 hours of running time when it's off your wrist. Enough to comfortably carry it overnight without resetting the time. Power reserve is simply how long the mainspring keeps the watch going once you stop wearing it.
39.5mm
Case size
The case measures 39.5mm across (excluding the crown) — the classic, do-anything size — balanced on most wrists and just as at home with a suit as with a tee. 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 Promaster GMT BJ7150-50E use?
The Citizen Promaster GMT BJ7150-50E uses Citizen's Eco-Drive technology (B878 caliber), which is powered by light and does not require battery changes.
Is the Citizen Promaster GMT BJ7150-50E suitable for swimming?
Yes, this watch has a water resistance rating of 200 meters (20 ATM), making it suitable for swimming and recreational diving.
What is the case size of this watch?
The Citizen Promaster GMT BJ7150-50E features a compact and wearable 39.5 mm stainless steel case.
Can this watch track multiple time zones?
Yes, the watch features GMT functionality, allowing you to track two time zones simultaneously, which is ideal for travelers.
What material is the watch crystal made of?
The watch is protected by a tough crystal with an anti-reflective treatment, ensuring durability and clear readability in bright conditions.
How long does the watch run on a full charge?
When fully charged, the Citizen Promaster GMT BJ7150-50E can store energy for approximately 9 months of operation.
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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