Breitling bentley gents b04 gmt chronograph automatic watch the bentley b04 gmt stands out for its extremely functional dual timezone system combined with a high performance selfwinding chronograph movement the watch has a stainless steel case and strap and black dialmovement automatic over 70 hour power reserve 24 hour 2nd timezone 14th of a second chronograph 30 minute and 12 hour totalizers calendarcase stainless steel case diameter 49mmwater resistance 100 meters