Seiko 5 Classics 100M SNXS Silver Automatic Stainless Steel Watch SNXS73K1Seiko 5 Classics 100M SNXS Silver Automatic Stainless Steel Watch SNXS73K1 This particular timepiece is the original issue of the iconic SNXS case design. The black dial with the day and date at the 3 o'clock position is protected by a hardened Hardlex mineral crystal. The steel case of the watch is complemented by a classic link bracelet. The watch is powered by a 4R36 mechanical movement with automatic winding and a power reserve of around 41 hours.