SK17 Seiko Alpinist. Reference SARB017. Watch measures 38mm and is made from steel. Automatic Seiko movement caliber 6R15. Sapphire crystal on the front and a closed case back. Waterproof 20ATM or 200 meters. Functions are hours, minutes, sweep seconds, date and compass. This watch is fitted with an aftermarket green NATO strap. 2 Extra brown Hirsch leather straps with steel pin buckles (both used) are also with this set. Naturally this watch is complete with the original box and papers and original bill of purchase. A great little set and a very collectible watch! SOLD