The BN7020-09E is suitable for 1000m saturation diving. This dive watch undergoes a water resistance test in which the watch remains in a pressure chamber containing helium and oxygen or 100% helium gas for 15 days. After this the watch is then returned to the atmosphere outside the pressure chamber within 3 minutes and is exposed to 125 bar during this high speed decompression. The battery of tests on this watch require the watch to be made using the best materials and advanced technologies.

For the Citizen BN7020-09E, the Super Titanium IP technology Duratect DLC & MRK was used to achieve maximum robustness with a comfortable wear.

Advanced features include a Unidirectional bezel with a steady rest locking mechanism, photo luminescent bright hands and markers, colour coded bezel for warning the diver, a screw lock crown and anti-reflective coated sapphire crystal glass. The BN7020-09E is Made in Japan and is shipped with a wetsuit strap extension.

This Citizen Big Boy comes as a full set, Dutch supplied, with the Suppaparts titanium lugs to make the watch compatible with all 24mm straps. Factory warranty until 6-2024.