The Seiko Monster is no doubt a signature design by Seiko. It started off as a 200m rated diver released in the early 2000s. Due to its popularity, several limited edition as well as JDM models were introduced. In recent years, they are powered by the 4R movement. Besides the 200m diver, Seiko also make several Seiko 5 models that have the monster look. Two nice models that they released recently are the fieldmonster (SRP441) and the mini monster (SRP481K) shown above.
This mini monster is different from the previous model. It is now powered by the 4R36 movement instead of the 7S36 movement. It is also bigger than the 7S model.
Shown above is the 7S model and below is the 4R model. You can see that the hour markers on the 7S model cut into the minute chapter ring. On the 4R model, the hour markers are on the dial and do not interfere with the minute chapter ring.
The diameter of the new model is 43mm excluding crown. The older model is probably 40 or 41mm.
Here are a few shots of the watch.
Lug width: 22mm
Lug to lug: 50mm
Water resistance: 100m
Seiko 5 SRP481K featured in this post is provided by:
K2 Watch Company
845 Geylang Road, Tanjong Katong Complex, #03-K1
Tel: 6746 0270