Seiko Prospex SRPF77K1 Save The Ocean 'King Turtle' Men's WatchModel Specification: SRPF77K1 The stainless steel case measures at 45 mm in diameter. The watch is secured by a blue silicone strap. The watch features an engraved case back. A sapphire crystal with a magnifier protects the blue manta ray dial. The black bezel is unidirectional. The large hands and hour markers are luminescent. Water resistant to 200 metres or 20 bars. Features on the model include a screw down crown, a day and date display and a stop