![Seiko Men's Prospex Stainless Steel Automatic-self-Wind Watch with Silicone Strap, Black, 21 (Model: SRPC44)](http://ralphsjewelry.com/cdn/shop/products/SRPC44_1_400x600_8371db95-de39-4409-8f50-8ec4d1abfdd8_{width}x.png?v=1618937197)
Automatic Diver
Manual and automatic winding capabilities
21,600 vibrations per hour
Power reserve: approximately 41 hours
24 jewels
One-way rotating elapsed timing bezel
LumiBrite hands and markers
Day/Date calendar
Screwdown crown and caseback
Case diameter: 45.0mm
Stainless steel case
Silicone strap
Water Resistance: Diver's Watch to 200 meters (660 feet). Follows ISO standards and is suitable for scuba diving.
Caliber 4R36