Citizen “Leopard” 150m diver day-date 4-722710 Y


In fact it is not really a “Leopard” but it is equipped with the same movement that can be found mostly in the Leopard range. Also, the case style is the well known one used by Citizen in their 150m divers. What can I say, the perfect combination of style and functionality. This is the (October 1972) Citizen 150m day-date diver model 4-722710 Y.

citizen 150m day date leopard 7200 4-722710 y

The case, as stated before, is similar (not exactly the same though) with other 150m divers. Read about similar divers HERE. It has the same 40mm diameter, brushed top surface, polished sides, large unsigned screw in crown, screw in case back. The lug width is 20mm. There is also a bidirectional friction type bezel. Again, the bezel has a few variation among 150m divers. It is important to pay attention to this because a lot of these pieces come with aftermarket bezel inserts or wrong ones. I wrote an article about one particular fake & real inserts HERE. The crystal has a flat surface and it is concave on the inside. Of course, the water resistance is 150m.

The interesting feature of the watch is the automatic movement, Citizen cal 7210, 24 jewels. It works at 28,800 bph, 8 ticks per second, 4 Hz. It can be hand winded too as most of the Citizen movements do. Because the watch has this calibre, it displays the date as well as the day of the week. The dial is black, with raised hour markers, logo and day-date frame. The printing is white. On the bottom it is also printed the dial code 726257 Y and Japan. The hands are similar all across the range, with slight variations in size and shape. In this case the sweeping second hand is straight without the luminous dot as others have. I have seen a variation of this exact model with a black day and date wheel and that one has a second hand tip with a luminous ball.

The strap is a curved end Tropic rubber one that fits the watch nicely and gives it a lot of personality. Lovely watch to have and wear.

Read more about Citizen divers HERE.

Citizen Divers and Tropic Straps


Anyone interested in vintage divers recognize what a Tropic strap is. The others should know that this is a certain type of rubber band, made  in Switzerland during the 1960s and 1970s.  They were later manufactured in China and Hong Kong too, using the original molds and same materials. The originals are signed “TROPIC” and marked “SWISS MADE” and are typically fitted with an “INOX” or “ACIER” signed buckle. Citizen used the multiple perforated model with a single sliding strap keeper as seen in the pictures below. They are marked “Tropic” and the lug width (let’s say “20mm”) is indicated. “MOD DEP” that stands for “Modèle Déposé” or registered design. The reference no. is also visible on one end. They are made from a very pliable rubber for a comfortable fit and durability. The band is 5mm thick where it meets the watch and on the clasp end and 2.6mm thick at the tail end.

Here it is how a Citizen stainless steel buckle should look like on one of these Tropic straps. My opinion (from the data I have so far) is that most of them came with the “Acier” or “Inox” signed piece.

citizen tropic strap

Not only Citizen were fitted on Tropic straps but Rolex, Tudor, Blancpain, Omega, Longines and many others too. They were all aware  of the Tropic quality. Soft, relatively thin, very pliable, durable and a gorgeous feel and look on the wrist. vintage citizen diving tropic strapYou have a ’60-’70 vintage Citizen Diver? Get a Tropic strap for it! It will be the perfect match!

Read more about vintage Citizen diving watches HERE.