Swiss quartz movement with a long life battery that lasts up to 3 times longer (up to 7 years) imagine not needing to change the battery for that long 40Mm stainless steel case with a coin-edged uni-directional rotating bezel in gold tone with a black ring indicating the time in 5 minute increments Mineral crystal that resists scratches with a magnifier over the date, that is located at the 3 o'clock position Screw-Crown & Screw-caseback to assure water resistancy Water resistant up to 200 meters, for deep swimming excursions