Seiko Prospex SRPB51 Automatic Diver Black Dial

Automatic Diver 

Manual and automatic winding capabilities 

21,600 vibrations per hour 

Power reserve: approximately 41 hours 

23 jewels 

One-way rotating elapsed timing bezel 

LumiBrite hands and markers 

Date calendar 

Screwdown crown and caseback 

Case diameter: 44.0mm' 

Stainless steel case and bracelet 

Water-resistance: Diver's Watch to 200 meters (660 feet). Meets ISO standards and is suitable for scuba diving. 

Caliber 4R35