Mechanical Movement Manual Winding 23 Jewels * Date Calender * Functions: Hours, Minutes, Seconds, Date calendar, Stop Watch With Summing Up Action * Shock Protection * Power Reserve * Chronograph Running 37hr * Sapphire crystal * 43mm case diameter * Water Resistant 30 Meters * This Line Is The Sequel Of Very Successful "Wright Brothers" Models Which Were Dedicated To The Creators Of The First Airplane In The World.