Reservoir’s unusual Hydrosphere dive watch gets a new look this month as the Paris-based independent watchmaker launches the Hydrosphere Cenote, a lushly colored tribute to Mayan undersea caves.
Since its debut several years ago, the Hydrosphere’s unusual retrograde minute display and jumping hour module set it apart from traditional dive models while still upholding a diver’s need for highly legible dive timing, unidirectional bezel, helium valve and a strong 250 meters of water resistance.
Reservoir colors the Hydrosphere Cenote with a green dial with sun ray finishes that echo the shades of its namesake locale. Formed as calcareous rocks collapsed, the Cenote is lit as sunlight entering the caves create and reveal bright color variations ranging from turquoise to azure blue, green and yellow. 
Framing the colors, the watch’s 45mm bronze case and a ceramic bezel offer double graduation for reading dive-stop times. Three functions are visible: the jumping hour, the retrograde minute and the power reserve, all powered by Caliber RSV-240, composed of a proprietary, patented module of 113 parts on a Swiss-made manufacture movement built from a La Joux-Perret G100 base. 
Price: $4,600.
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