Men's Watches

Watch of the Week #3- Citizen BN0151-09L

Welcome back to week #3 where we talk everything about watches because we love them so much!! This week, we will explore a little about dive watches, especially the Citizen Promaster Eco-drive.



Let’s talk firstly about the engine of the watch. This watch comes with the Citizen caliber E168, part of the Eco-drive series of watches which uses solar energy to convert to electrical energy. While technically you do not need a battery, the solar cells inside the movement still have a backup battery.

Eco-drive at the case back (Source:

The solar cells underneath the dial capture the sunlight and store inside the rechargeable batteries. Talking about saving the environment.



Citizen Eco-Drive (Source:

The case and case back are made out of stainless steel, with a diameter of 48mm and thickness of 12mm. On top of that, the crystal protecting the dial is made out of mineral glass, which is scratch resistant.

Sizing Guide (Source:

Moreover, the watch is equipped with a rubber vented strap, made out of polyurethane (PU) rubber which is popular among dive watches.

Strap (Source:


Dial zoomed in (Source:

The eco-drive caliber E186 comes with the standard 3 hand movement like the hour, minute and second with the date function located at the 4 o’clock. Accompanying the blue dial are grey and orange minute and hour hands with luminous (glow in the dark).

The face of the watch (Source:

On top of that, the watch features round markers and rhombus markers on the 12, 3,6 and 9 o’clock of the dial. What I like is also the minute markers 10,20,30 and so on printed on the uni-directional bezel. Lastly, it comes with a screw down crown at the 4 o’clock angle and tang and buckle fastening.

How it looks (Source:

And oh did we mentioned? It can withstand water up to 200 meters or 660 feet for you Americans. ;P





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