: They use a distinctive "tonneau" or barrel-shaped case, which is a signature look of the luxury Richard Mille RM 055.
: Most "055" models feature a manual-wind mechanical movement . This means they do not use batteries and must be wound by hand to keep time. Watch AWGS Bl 055
: While some variants may claim limited water resistance, it is generally recommended to avoid prolonged water exposure to maintain the movement's longevity. : They use a distinctive "tonneau" or barrel-shaped