This awesome vintage Wakmann chronograph has a hand-wound valjoux 7736 movement. It is 39mm across, not including crown. Case is stainless steel. Watch is in excellent vintage condition as shown in pictures. The blue and gray bakelite bezel is in fantastic condition, and paired with the pink chrono hand gives the watch a distinctive funky vintage vibe. This watch comes on a genuine leather strap. All functions work properly, but has not been tested for accuracy and service history is unknown. Please feel free to ask any questions!