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: Semi glossy black color leather strap w/ black stitching Dial: Matt Black, 7506C color Super Lum. applied indexes Hands: Cream Sec. hands: Shiny red color w/ green lum. filled 9 hour Sub. hands: Matt 7513C w/ white lum 3 hour Sub. hands: Matt 7513C w/ white lum