Seiko 5 Sports SRPG39K1 Field Black Leather Strap Automatic Men's WatchThe five core features of the Seiko 5 Sport: The mechanism within the watch is 4R36 automatic movement which is built in house and the calibre is comprised of 24 Jewels and a 41 hour power reserve. The placement of the crown is signature to the Seiko 5 Sport collection, positioned at 3 o'clock. Each Seiko 5 Sport displays a day and date window at the 3 o'clock position on the dial. The Seiko 5 Sports collection are known for significant water