Citizen Promaster BN7020-09E – Professional Diver 1000 m Eco-Drive

The Citizen Promaster BN7020-09E, nicknamed “Solarzilla,” is an extreme diving watch designed for the most demanding conditions. It is the first solar-powered (Eco-Drive) dive watch capable of withstanding saturation dives to 1,000 meters. Featuring a reinforced Super Titanium™ case, an anti-reflective sapphire crystal, a bezel-locking system, and a power reserve indicator, it is a serious timepiece for discerning divers.

Technical specifications

• Movement: Eco-Drive caliber J210 (powered by light, no battery to change)

• Power reserve: approximately 540 days (or ~1.5 years)

• Case/Material: Super Titanium™ with Duratect MRK + DLC treatments for high durability

• Case diameter: 52.5 mm

• Height/thickness: ~22 mm

• Waterproof rating: 100 bar (1000 m), suitable for saturation diving (with helium resistance)

• Glass: sapphire, with anti-reflective coating

• Strap: rubber/polyurethane (urethane), black

• Functions: hours, minutes, seconds, date, power reserve indicator Bezel system: unidirectional bezel with twist-to-lock mechanism for diving safety

• Helium escape system: automatic escape valve to release helium under saturation conditions (deep dive)