Promaster Eco-Drive Professional 1000m Diver's BN7020-09E

The BN7020-09E is the world’s first light-operated diving watch suitable for saturation diving. The new flagship of the Promaster Marine collection uses a wide range of Citizen technologies, resulting in robustness and even greater water resistance. A diver’s watch, which is to be suitable for 1000m saturation diving, must not only undergo the water resistance test, but also a test in which the diver’s watch remains 15 days in a pressure chamber containing helium and oxygen or 100% helium gas. It is then returned from the pressure chamber to the atmosphere outside the pressure chamber within 3 minutes and is exposed to 125 bar during this high-speed decompression. This requires the best materials and advanced technologies. For the BN7020-09E the Super Titanium IP technology Duratect DLC & MRK was used to achieve a maximum of robustness and comfort. The BN7020-09E is equipped with an Eco-Drive, which makes it independent of batteries.

Calibre No. - J210
Maximum run time from full charge (Normal Use Condition) - Approximately 1.5 years
Movement - Eco-Drive
Signal Reception - Without Radio Reception Function
Strap - Synthetic Rubber Strap
Water Resistant - Water Resistant to 1000m
Weight - 180g
Thickness - 22.2mm
Case Size - 52.5mm
Case - Titanium
Surface Processing - Duratect DLC + MRK + TIC
Glass - Sapphire Glass (Non Reflection Coating)
Warranty - 3 years warranty

Specification
Date Display
Super TitaniumTM (Duratect DLC + MRK + TIC for some parts)
Eco-Drive (recharged by any light source, no need for regular battery replacement)
Insufficient Charge Warning Function
Overcharge Prevention Function
Power Reserve Indicator
Made In Japan