Tested to a depth of 5000m in a Roxer tank the Hublot Oceanographic 4000 by has a 6.5mm thick sapphire crystal in order to withstand the pressure of these kind of depths and is certified to 4000m ( 13,120 feet).
The grade 2 titanium case back is screw down and a helium valve positioned at 10 o`clock allows gases that have entered the watch to safely escape during ascent. In order to ensure water resistance both crowns are screwdown and fitted with o-ring seals.
The elapsed time gauge uses a rack driven internal flange which is unidirectional to make it as safe as possible and in order to help avoid accident adjustment the dive time indicator has been set as close to the dial as possible.
Dive time is set using the unidirectional flange crown at the 2 o`clock position which features an oversized crown and bayonett fitting. For winding and setting the time a second crown is positioned at the 4 o`clock position. Both crowns are screwdown and fitted with O-ring seals to ensure water resistance.
In order to comply to dive watch iso standards the elapsed time needs to be legible from 25cm away in darkness. With this in mind the surface areas of the dial, flange and hands have been maximised and coated with SuperLuminova.
The case is 48mm in size available in Titanium which is limited to 1000 pieces and priced $19,900 or carbon fibre (500 pieces) at $25,900.
Hublot Oceanographic 4000 Specifications
Reference 731.NX.1190.RX, 731.QX.1140.RX
Series Limited to 1000 pieces for the titanium version
Numbered 01/1000 to 1000/1000
Limited to 500 pieces for the All Black version in black carbon fiber
Numbered 01/500 to 500/500
Case: “King Power” – 48 mm diameter
Micorblasted satin-finished titanium or matte carbon fiber
Bezel Microblasted satin-finished titanium or matte carbon fiber
6 black PVD H-shaped titanium screws
Crystal: Sapphire with anti-reflective treatment
Lug: bezel Black composite resin
Lateral inserts Black composite resin
Case back: microblasted satin-finished titanium, or microblasted satin-finished titanium with black PVD
Crown: Titanium with black rubber insert or black PVD titanium with black rubber insert
Screws: Black PVD titanium
Water resistance: Certified to 400 ATM or 4,000 meters
Tested to 5,000 meters according to the NIHS standards
Dial: Matte black
Satin-finished appliques with green or black SuperLuminova
Hands Microblasted satin-finished with green or black SuperLuminova
Movement: Mechanical with automatic winding HUB1401
No. of components: 180
Bridges: Satin-finished, beveled & polished
Screws: Black PVD
Barrel: With reinforced spring
Escapement: Glucydur hairspring
Power Reserve: Approximately 42 hours
Straps: Available with two straps – black rubber and rubber and nylon
Closing system Tongue and buckle in titanium or black DVD titanium