Prospex Speedtimer Solar Chronograph

Design inspired by Seiko's 1969 Speedtimer, one of the world's first automatic chronographs

Powered by light energy - no battery change required

6-month power reserve once fully charged

Chronograph measures up to 60 minutes of elapsed time in 1/5-second increments with split time measurement function

Caliber: V192

Dial: Silver dial with sunray finish, black subdials, and red accents

Hands and Markers: LumiBrite 

Crystal: Curved sapphire crystal with anti-reflective coating on the inner surface

Bezel: Dual-tone black and gray tachymeter bezel

Case Back: Screwdown caseback

Case Diameter: 41.4mm

Case and Bracelet: Stainless steel 

Clasp: Tri-fold push button release clasp

Water-Resistant Up to 10 bar, 100 meters (330 feet)