SEIKO PROSPEX Silfra Tortoise European Exclusive Limited Edition Automatic with Manual Winding Screw case back, Screw-down crown, An additional polyester strap is included, Rotating bezel MOVEMENT TYPE: Mechanical MOVEMENT CALIBRE: 4R35 -35/+45 seconds per day BAND TYPE: Stainless Steel Bracelet CLASP TYPE: Z-Clasp DIAL COLOUR: Black WATER RESISTANCE (Metres): 200 CASE WIDTH: 42.4mm CASE DEPTH: 11.7mm GLASS TYPE: Sapphire Crystal DATE FUNCTION: Date Only STONE TYPE: