Presenting the newest addition to the Prospex Black Series 'Night' lineup: inspired by nocturnal diving expeditions and the adventurous diver's perspective through a night vision scope. Affectionately dubbed the 'turtle' by Seiko enthusiasts, its shape and profile, including the case back, evoke the gentle curves of a sea turtle's shell, known as a symbol of luck and fortune among divers. - Calibre 6R35 - Automatic - Powered by The Movement of The Wearer - Accuracy 25 -15 seconds a DAY (at normal temperature range (5°C and 35°C) - 41mm Case Size - 12.1mm Case Thickness - Stainless Steel Case - Silicone Strap - Sapphire with Anti-Reflective Coating on the Inside - Screw Down Crown - Divers 200 Meters Water Resistant