Scubapro Aladin A1 Dive Computer with rubber strap 

The new A1 is a basic entry-level dive computer designed for new divers and casual recreational divers looking for a simple yet versatile wristwatch-style computer that can be worn on the surface as well as under water. The A1 offers full time-keeping functions, and three Dive modes plus a Sport mode. An intuitive menu system and clearly marked button controls make it easy to access and understand all functions. Offering just the right balance of topside features, underwater functions and ease of use, the A1 will quickly become an integral part of not just your diving life, but of your High-resolution matrix display with large numbers is easy to read under water, even in adverse conditions.