Gerald Genta Men's Arena Sport Retro Watch

Swiss automatic movement Titanium watch case Black rubber watch strap Black and grey dial Jumping hour at 12 Arabic hour markers Date on bottom half of dial Synthetic sapphire crystal Double folding buckle Water resistant 100 meters (10 ATM) Swiss made Display back Case dimensions: 45 mm in diameter Strap dimensions: 20 mm wide x 9 inches long All measurements are approximate and may vary slightly from the listed information. Watch bands fit 7.5-inch to 8.5-inch wrists. This watch is powered by automatic movement which means the winding of the spring occurs automatically when the wearer moves his/her arm. However, it is recommended that you manually wind the watch at least once every two weeks. It is also important to adjust the time once a month as automatic movement can gain or lose a few minutes per month.