Watchfinder & Co. Presents Inside The Omega Speedmaster Day-Date Removing The Auto Work Removing The Hands And Dial Disassembling The Dial Side The Omega Speedmaster Day-Date 2520.53.00 Houses The ETA/Valjoux 7751 – Based Calibre 1151 The Calibre 1151 Boasts The Time, Date, Day, Month, Chronograph And Twenty-Four Hour Time There Are A Total Of Eight Hands And Two Discs Used To Display These Individual Complications Removing The Balance The Balance Is Removed To Access The Escapement. It Is Returned For Cleaning To Protect The Hairspring The Rotor Of ETA 775x – Based Movements Spins So Fast, A Characteristic ‘Wobble’ Can Be Distinctly Felt On The Wrist Removing The Mainspring The Mainspring Has Lost Its Tension And Must Be Replaced To Retain The Factory Level Of Power Reserve Cleaning The Movement Reassembling The Omega Speedmaster The ETA/Valjoux 7751 Is An Evolution Of The Valjoux 72, The Movement Used In The First Rolex Daytona Omega Have Since Had The Cal. 1151 Chronometer Certified, Renaming It The Cal. 3606, Which Is Still Used Today Omega’s Cal. 1151 May Not Be The Most Exclusive Movement, But It’s Complexity And Affordability Make It A Winner Inside The Omega Speedmaster Day-Date | WatchFinder.co.uk