Ulysse Nardin Blast Free Wheel Maillechort

The Ulysse Nardin Blast Free Wheel Maillechort, reference 1760-401LE-4A-MAIL/3A, has a 45 mm white gold case, a flying tourbillon and a velvet rubber strap. With a thickness of 12.4 mm, the case has a water-resistance rating of 30 metres. Manual-winding calibre UN-176 operates at 18,000 vibrations per hour with a power reserve of 170 hours, a silicon escapement and 23 jewels. The openworked Maillechort dial has a power reserve indicator beneath a sapphire crystal. The hands have luminous material. The watch is a limited edition of 50 pieces. The Maillechort dial is an alloy of copper, zinc and nickel with a grained texture. The glass box is carved and hollowed from a single block of sapphire.