Omega Constellation Co-Axial Watch - 27 mm Steel Case - Blue Mother-Of-Pearl Dial - 123.10.27.20.57.001 Cherry red alumina bezel ring with

red alumina bezel ring with brushed platinum Liquidmetal tachymeter scale

self winding HUB 4700 movement with skeleton chronograph

Ensuring durability

Ulysse Nardin introduced a patented Dual Time system -- one of its many technological breakthroughs

calibre 8520 self-winding movement with co-axial escapement for greater precision stability and durability

Omega Constellation Co-Axial Watch - 27 mm Steel Case - Blue Mother-Of-Pearl Dial - 123.10.27.20.57.001 Cherry red alumina bezel ring with27 mm stainless steel case, transparent back, stainless steel bezel with engraved roman numerals, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, blue mother of pearl dial with a wavy pattern extending from the iconic claws, 11 diamond indexes, date window at 3 o'clock, calibre 8520 self winding movement with co axial escapement for greater precision stability and durability, approximately 50 hours of power