This is a Bering watch which has a blue strap. The watch runs on batteries, so it's easy to maintain.
From Miinto
Bering , Mens Watch Bering 17240-797, Quartz, 40mm, 3Atm ,Blue male, Sizes: ONE SIZE
The product is available from £129.08 at international stores.
Watch Shop
Gents Bering Ultra Slim Blue Watch - Blue / Blue