The powerful features that pack this iconic chronograph are powered by the Sellita SW510 BH B movement which allows the timepiece to be either automatically (SW510 BH b) or manually wound (SW510 M BH b). Various choices for its hands and dials are also available, so you can choose from Broad Arrow to Lollipop, and Orange Boy to Panda. Definitely a classic with leading edge preferences. Power Reserve: 63 Hrs Case: Silver color case. Shiny black aluminum inlay Band: Black Rubber Tropic Strap Dial: Matt black color dial. White color luminous indexes Hands: Shiny silver color w/ white luminous filled Sec. hands: Shiny red color w/ white luminous filled9 hour Sub. hands: Shiny black color with white3 hour Sub. hands: Shiny white color