Leroy presents a unique specimen of its Chronomètre Observatoire from the Osmior line, inspired by an aluminium travel clock preserved in the brand's historical museum. The case, dial, bridges and mainplate of the timepiece that the brand will dedicate to Only Watch are made of this material. It is equipped with the new hand-wound L200 calibre, visible through the sapphire crystal opening in the case back: its main features include a direct-impulse escapement to the balance, which transmits constant energy to the regulating organ in favour of greater precision, and a double barrel in parallel. The 98-hour power reserve is indicated by the red diamond-shaped window positioned at 9 o'clock. The strap is made of hand-sewn alligator leather and lined with alcantara, fastened by a pin buckle, also made of aluminium.
