Citizen Promaster Dive BJ8050-08E, 48mm, Black Dial
Citizen Promaster Dive, Black Dial
The Citizen Promaster Dive BJ8050-08E is a 48mm men's solar-powered dive watch with a black dial, stainless steel case, and 300m water resistance.
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About this item
- Iconic Promaster dive watch with advanced functions for deep depths.
- Features a 3-hand date display for essential timekeeping.
- Durable stainless steel case with a comfortable polyurethane strap.
- Luminous hands and markers ensure visibility in low light conditions.
- Equipped with an anti-reflective mineral crystal for clear viewing.
- Water resistant to 300 metres, suitable for serious diving.
Top Highlights
- Brand
- Citizen
- Model Name
- Promaster Sea
- Model Number
- BJ8050-08E
- Department
- Men
- Item Type
- Watch
- Manufacturer
- Citizen
- Country of Origin
- Japan
- First Available
- 15 November 2023
Features & Specs
- Display
- Analog
- Movement Type
- Japanese quartz
- Calibre
- B877
- Power Source
- Solar Powered
- Additional Features
- Luminous, Water-resistant
- Complications
- Date
- Battery
- No battery (solar)
- Strap Type
- Two Piece Strap
- Case Material
- Stainless steel
- Case Size
- 48.0 mm
- Case Thickness
- 19.0 mm
- Lug Width
- 29.0 mm
- Weight
- 195.0 g
- Water Resistance
- 300 m
- Sport Type
- Diving
- Strap
- Polyurethane
- Clasp
- Buckle
- Closure Type
- Buckle
- Crystal
- Mineral crystal
- Dimensions
- 4.8 x 1.8 x 4.8 cm; 195.04 g
Style
- Style Name
- Watches
- Dial Shape
- Round
- Dial Colour
- Black
- Band Color
- Black
- Theme
- Diving Watches
- Face Style
- Diver
- Collection
- Promaster Sea
- Dial Markers
- Luminous
Will it fit your wrist?
Best on 20.5–21.5 cm (8.1–8.5 in) wrists
A 48 mm case sits just right on these wrists. If your wrist is 21.5–22.5 cm, it looks smaller and more understated. If your wrist is 19.5–20.5 cm, it looks bigger and bolder.
Measure your wrist and see what fitsA rough guide based on case diameter only.
Is this watch big or small?
87% of the men's watches we list are smaller than this one
The most common men's size is 42 mm (173 models). 40 models are 48 mm, like this one.
All our watch size dataDescription
The Citizen Promaster Dive BJ8050-08E is a robust and reliable men's solar-powered dive watch, designed for enthusiasts who demand performance and durability in aquatic environments. Part of the iconic Promaster Sea collection, this timepiece combines Citizen's renowned Eco-Drive technology with a classic diver aesthetic, making it a practical choice for both professional and recreational divers. Its substantial 48mm case ensures excellent legibility and a commanding presence on the wrist.
This model features a Japanese quartz solar movement, eliminating the need for battery changes and ensuring consistent, accurate timekeeping powered by any light source. The watch boasts an impressive 300 metres water resistance, making it suitable for serious underwater exploration. A durable mineral crystal protects the black dial, which is equipped with luminous hands and markers for optimal visibility in low-light conditions, a crucial feature for diving safety.
The Promaster Dive BJ8050-08E is secured to the wrist with a comfortable and robust polyurethane strap, fastened by a classic buckle for a secure fit. Its stainless steel case provides excellent corrosion resistance, essential for prolonged exposure to saltwater. This watch is a testament to Citizen's commitment to creating functional and accessible dive instruments, offering a blend of advanced technology and rugged design for the adventurous wearer.
Frequently Asked Questions
How deep can I go with the Citizen Promaster Dive BJ8050-08E?
The Citizen Promaster Dive BJ8050-08E boasts a robust 300 metres of water resistance, making it suitable for professional diving and serious underwater activities. This rating ensures it can withstand significant water pressure, but always ensure the crown is properly sealed before entering water.
What type of movement powers this Promaster Dive watch?
This Promaster Dive model is powered by Citizen's Eco-Drive solar quartz movement. This innovative technology converts any light source into energy, storing it in a power cell, which means you never need to replace a battery. It offers reliable and precise timekeeping.
Is the mineral crystal on this watch prone to scratching?
The Citizen Promaster Dive BJ8050-08E features a durable mineral crystal. While mineral crystal offers good shatter resistance, it is generally more susceptible to scratches compared to sapphire crystal, which is a harder material often found in higher-end watches.
Is the 48mm case size suitable for all wrist sizes?
The 48mm case of the Promaster Dive BJ8050-08E is quite substantial, offering a bold presence on the wrist. It is generally well-suited for men with medium to larger wrist sizes. For individuals with smaller wrists, it might feel oversized, so checking wrist circumference is advisable.
How does the Eco-Drive technology work in daily use?
Citizen's Eco-Drive technology allows the Promaster Dive BJ8050-08E to be continuously charged by any light source, natural or artificial. This eliminates the need for battery changes, providing a hassle-free experience for daily wear. A full charge can last for months, even in total darkness.
What makes the Promaster Dive BJ8050-08E different from other dive watches in its price range?
The Promaster Dive BJ8050-08E stands out with its reliable Eco-Drive solar movement, eliminating battery concerns, and its impressive 300m water resistance. While many dive watches offer similar WR, the combination of solar power, a large legible dial, and Citizen's build quality makes it a strong alternative for those seeking a robust and low-maintenance tool watch.
Editor's take
The Citizen Promaster Dive BJ8050-08E stands as a formidable entry in the accessible dive watch segment, appealing to adventurers and daily wearers alike who appreciate robust functionality without compromise. This timepiece, part of the esteemed Promaster Sea collection, embodies Citizen's commitment to reliable, light-powered technology, making it a compelling choice for those seeking a low-maintenance yet high-performance companion for their aquatic pursuits. Its substantial 48mm case size ensures a bold wrist presence and excellent legibility underwater.
At its core, the BJ8050-08E is driven by Citizen's proprietary Eco-Drive solar quartz movement, a testament to innovative watchmaking that harnesses any light source to power the watch, eliminating the need for battery replacements. This ensures exceptional accuracy and reliability, crucial for a dive instrument. With an impressive 300 metres of water resistance, protected by a durable mineral crystal and featuring luminous hands and markers, this watch is engineered to perform in demanding underwater environments, offering peace of mind to divers.
While the mineral crystal offers good shatter resistance, it is more prone to scratching compared to sapphire, which is often found on higher-end dive watches. The large 48mm case, while providing excellent readability, might feel oversized for individuals with smaller wrists, potentially limiting its versatility as an everyday wear for some. Additionally, the polyurethane strap, while practical for diving, may not offer the same refined aesthetic as a metal bracelet or a premium rubber strap for formal occasions.
Ultimately, the Citizen Promaster Dive BJ8050-08E is an excellent choice for divers and outdoor enthusiasts seeking a highly functional, reliable, and environmentally friendly timepiece. Its Eco-Drive technology and robust construction make it a dependable tool watch. For those prioritising scratch resistance or a more compact form factor, exploring other models within the Promaster collection or considering alternatives with sapphire crystals might be worthwhile, though often at a higher price point.
In categories
From the manufacturer

Promaster Sea Purpose-Built
The Citizen Promaster Sea BJ8050-08E is engineered for marine environments, offering 300 metres of water resistance. Its robust construction is powered by a reliable Japanese quartz movement, ensuring precise timekeeping in demanding conditions. This 48.0mm timepiece is a dedicated instrument for underwater activities.

Robust Construction Details
The 48.0mm stainless steel case provides substantial protection and presence on the wrist. A durable mineral crystal shields the dial, designed to withstand impacts encountered during active use. Completing its utilitarian build is a resilient polyurethane strap, engineered for comfort and security in wet conditions.
THE DETAILS
Anti-Reflective Mineral Crystal

OWN YOUR STYLE- DISCOVER MORE
The Promaster Sea's substantial 48.0mm case and bold aesthetic define its presence as a serious dive watch. Its design prioritises legibility and durability, reflecting a functional approach to horology. The robust polyurethane strap complements this purposeful construction, ensuring secure wear during any activity.

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