Hello everyone, this is bokeytime. This issue’s watch review shares with you the ZF factory Tudor Black Bay 54 series M79000N-0001, which is known in the watch circle as the “Little steel Cannon”. This exquisite 37mm piece fills the gap of no small-diameter watches in the Biwan collection. As a professional Tudor manufacturer, ZF Factory has previously launched many Tudor replicas, such as the Copper flower, titanium potato, small Steel Shield, and the Black Bay series, which have received relatively good market responses. Now, let’s take a look at the specific workmanship of this newly launched ZF Factory Black Bay 54 series small steel gun.
Official model: Tudor Black Bay M79000N-0001 wristwatch

The ZF factory Tudor Black Bay 54 series M79000N small steel gun is made of 316L stainless steel, featuring excellent corrosion resistance and durability. The size is designed to be 37mm * 11mm, which is very suitable for both men and women to wear.
The weight is 136.9 grams
The ring opening of the small steel gun from ZF factory adopts a 60-minute stainless steel unidirectional rotating outer ring design, with a matte black aluminum letter-shaped ring, which is simple and elegant. A night pearl is placed at the 12 o ‘clock position.
The mirror surface is made of the same round-arched sapphire crystal glass as the original, which is very transparent as a whole and also has the characteristics of wear resistance and scratch resistance.
The dial features a fully matte black dial with golden text and a minute track. The gold-plated hour markers and snowflake hands are all coated with Super-Luminova luminescent material.
The font printing on the dial is also very accurate. The oil pressure is relatively thick and three-dimensional, and there is no double image when magnified.
The lugs are finely polished, and the edges are also mirror-polished. The strap and the watch head are tightly connected without any large gaps.
The side is polished to a mirror finish, and the overall shell shape is exactly the same as the original.
On the right is the timing adjustment crown, which adopts a screw-in design to ensure the water resistance of the watch. To adjust the time, you need to release it first. The Tudor rose logo relief on the head is also very three-dimensional. Note: The blue part on the head is from the protective film. After receiving it, just stick it off with adhesive tape.
The back adopts a dense design. The entire back cover is also polished quite well, with a fine brushed finish. The engravings on the back cover are also quite deep, and there are also the model number and code engravings of the watch on the lugs. The movement adopted is the relatively stable Seagull 2824 movement.
In terms of the strap, it is also made of 316L stainless steel with a three-link strap. There are also details of rivets on both sides. It is equipped with Tudor’s “T-fit” quick-adjustment buckle. This device has five holes. The wearer can quickly and precisely adjust the strap to a comfortable position without using tools, achieving an adjustable length of 8mm, which is very convenient to use. Here, Bo Ji makes a joke that the inner side polishing of the buckle of the ZF factory’s small steel cannon is rather sloppy. It’s not polished properly and doesn’t look clean. On the previously launched Biwan series, ZF Factory has always handled this position rather carelessly. Bo Ji is quite puzzled. This kind of effort doesn’t cost much.
The luminous effect is synchronized with the original
The wrist circumference of the Boji 16 feels delicate and compact when held, which is very pleasing
To sum up: The ZF factory’s Blue Bay 54 series M79000 small Steel Gun is still commendable in terms of appearance and workmanship. If you are looking for a small-diameter diving watch, then this ZF factory small Steel Gun is a good choice. Because it not only has the style of Rolex Submariner, but more importantly, its price is also relatively affordable.