Seiko Prospex SPB053 Automatic Diver Black Rubber Band gshock Accuracy: +/-15 seconds per month（without

Accuracy: +/-15 seconds per month（without receiving a GPS signal

Screw Down Crown: Yes

Water Resistance: 3 ATM

105 g (incl

Basic movement Miyota 821A

Seiko Prospex SPB053 Automatic Diver Black Rubber Band gshock Accuracy: +/-15 seconds per month（withoutProspex Automatic Diver Contemporary reinterpretation of Seiko's 1965 Diver's watch Manual and automatic winding capabilities 21,600 vibrations per hour Power reserve: approximately 50 hours 23 jewels One way rotating elapsed timing bezel Date calendar Blue dial Screwdown crown and caseback LumiBrite hands and markers Sapphire crystal with anti reflective coating on the inner surface Case diameter: 42. 6mm Stainless steel case with super hard coating