LONGINES ULTRA-CHRON,Testing the Longines Ultra-Chron high-frequency automatic Caliber L836.6,Ceas Longines Ultra-Chron Box Edition L2.836.4.52.8,THE REBIRTH OF A HIGH-FREQUENCY ICON: THE NEW LONGINES ULTRA-CHRON - Christos Imanoglou Jewelry,LONGINES Ultra-Chron With High-frequency Movement (1969) | LONGINES HK