The Sea Viper II is a 200 meter water resistant diver watch. We chose to go with the Japanese Miyota 8215 automatic movement for its accuracy and reliability. The installed unidirectional bezel exhibits very good action with no play in it, and we have tightly secured it. The sapphire crystal will protect your watch from surface damage. The Sea Viper II is secured with a solid and heavy duty stainless steel oyster band with deployment buckle.