HYDROSPHERE

IMMINENT SUBMERSION. DESIRE FOR EXPLORATION AND CHALLENGES INFUSE THE SENSES AND THE MIND…

Imminent submersion – Dive time: 45 minutes, depth: 25 meters. The pressure builds. Desire for exploration and challenge infuse the senses and the mind. Stay concentrated in the time to check the equipment: tanks, oxygen, pressure regulator, stabilizer… Clamped to the wrist, Hydrosphere, a watch resembling Scuba diving pressure gauges, the first survival instruments for divers. Having a unidirectional, rotating bezel with a double scale, helium valve and power indicator, RESERVOIR’s Hydrosphere asserts its uniqueness with a single needle on the dial. Upending the aesthetics of diving watches, it possesses the mainstays of a successful dive: security, functionality, confidence itself and its equipment.

Hydrosphere offers an original version of these masters of time. On the dial is a single needle for innovative diving instruments. Ingenious, Hydrosphere comes with an operation indicator at the base of the needle and a disc turning to the rhythm of the seconds. Also there is the vital unidirectional, ceramic rotating bezel with a double scale to ensure reading the time at different diving depths. It’s outfitted with a helium valve to release helium bubble that become trapped in the casing, thereby preserving its functional integrity during decompression.

RESERVOIR Hydrosphere

Water Tightness

Waterproof up to 250 meters, also expressed in “2.5 MPa”, the mega-pascal pressure unit equalling a million pascals and in 25 Bar, a pressure unit equivalent to 100,000 pascals.

Operation Indicator

Moves in a clockwise direction to show that the watch is in good working order.

Helium Valve

One-way valve that releases helium from the watch during deep dives that require the casing to be decompressed.

Bezel

Ceramic unidirectional rotating bezel with two scales for reading dive-decompression levels before and after the return of the retrograde hand.
– Use up to 45 minutes: Decompression level reading zone when the retrograde-minute hand is between 0 and 45.
– Use after 45 minutes: Decompression level reading zone when the retrograde hand turns to initial position.
It can be read in continuity with the first zone.

Read more

Crown

Wrapped in rubber, it adopts the design from compressed-air valves on diving tanks.

Bracelet

The 316L steel strap has a double push-piece sliding extension for easily adjusting the watch on your wrist when wearing it on a diving suit.

Window

The hour window is covered with a magnifying glass to optimise reading visibility, particularly while diving.

Superluminova

Coating that ensures the best visibility in the water or at night. It stores light during the day to then reflect it in dark conditions. Coating on the hands, the index of the Hydrosphere Blackfin, Hydrosphere Blue Hole and the dial of the Hydrosphere Air Gauge.

HOW TO MEASURE THE DECOMPRESSION LEVEL OF 15 MINUTES

Before the hand
indicates 45 minutes

After the hand
indicates 45 minutes

Before the jump of the minute

After the jump of the minute

Order online
Pick a watch

FREE
SHIPPING

SECURED
PAYMENT

EASY
RETURN

INTERNATIONAL
WARRANTY

Try a watch
Retailers Showroom Paris

NO COMMITMENT
TRY

MEET
AN EXPERT