Our roots lie in Muramatsu Watch and Clock Manufacturing, founded in 1893. The company manufactured and exported Japanese timepieces and created the PRINCE and KEYFORD brands.

In 2005, Montre Roroi Co., Ltd. was established as its original watchmaking division. Guided by the idea of creating timepieces that remain loved through the ages, we have also produced watches for apparel and jewellery brands.

M.R.M.W. recreates celebrated military watches from around the world, primarily from the 1930s to the 1970s. Their designs were shaped by the demands of real missions—legibility, durability and precision—rather than passing trends.

Drawing on our watchmaking heritage, we faithfully recreate not only their forms but also their aged character and sense of history, bringing the appeal of vintage watches to timepieces made for everyday use.