Lucien Rochat “Royal Sub Chrono”

European Watch Clock and Jewellery Fair 1991 BF 213
Lucien Rochat’s “Royal Sub Chrono” models are the only chronographs in the world water-resistant to a depth of 500m. High-frequency, 28,800 v.p.h., selfwinding movement, with totalizers for seconds, minutes and hours, calendar at 3 o’clock and small seconds at 6 o’clock. Available in 18K gold (with leather strap), steel or steel and gold. Protected screw-locked crown, glare-proofed sapphire crystal and unidirectional rotating bezel. (LUCIEN ROCHAT “Royal Sub Chrono”)