Beautiful Breitling Sprint ref 2010 40 x 48 mm, excluding crown Manual winding, Valjoux cal 7733 original mica glass 1969 production MOVEMENT: The legendary manual-winding Valjoux cal 7733 chronograph, featuring all the Breitling terminology of the period and shock protection, is polished and in good working order. The watch keeps good time with a substantial power reserve, and all chronograph functions function properly and return to zero. I've been in the retail industry since 2003. I love wearing and selling watches. I offer the finest, cleanest watches. After verifying their authenticity, I perform all necessary maintenance. Everyone's happiness makes me happy.