Seiko 21 Jewel Automatic watches have the traditionally built mechanical movements same as some of the best known and most expensive watches in the world. The watches simply wind themselves as they are worn and so never need batteries or any other complicated power source. They have the sweeping rather than ticking second hand. This is one of the latest Seiko 5 models, solid and built to last for many years.

Movement: Cal. 7S26, Automatic with manual winding capacity, 21 Jewels
Band: Stainless steel, Three-fold clasp with push button release
Caseback: Stainless steel, See-through & Screw case back
Glass: Hardlex
Dial: Silver sunburst, LumiBrite on hands, index(es) and bezel, Display date and day at 3 o'clock
Case Size: 38.2 (crown) x 41.8 x 10.5 mm (thickness)
Weight: 108 g
Water Resistant: 30M
Function: Automatic, Date & day display