Gerald Genta Arena Bi-Retro BSP.Y.10 BLUE Automatic after set Diamond Bezel watch This Gerald Genta Arena Bi-Retro BSP.Y.10 Blue Automatic Watch has an impressive presence. It features a daring, avant-garde dial design in blue complemented by an after set diamond bezel. The grill-like face on the dial has the jump hour disc underneath. This dramatic timepiece also features retrograde minutes and date. Concealed in a solid caseback secured by six screws is caliber 7710 automatic movement with 21 jewels. This wristwatch has a polished stainless-steel case measuring 47mm in diameter and is fitted with a black leather strap. Watch Functions Hours, Minutes, Central Second, Date, Hour and Date Retrograde, Jumping Hours Power Reserve 42 Hours Strap Color Black