For 35 years, Bersub has honed its expertise to meet the demands of underwater explorers, and the Light-X 7X embodies this quest for excellence. Designed for technical dives, underwater photographers, and researchers, this light combines raw power and luminous precision, turning every dive into an immersive experience. Its uniform beam of 7,000 lumens, featuring Osram LEDs, reveals the slightest reliefs of shipwrecks or the color palette of corals at depths of 300 meters.
Three lighting modes
The Light-X 7X is not just an accessory: it’s a mission tool. Its patented optical system offers three adjustable lighting modes (30%, 60%, and 100%) through a waterproof touch switch, ideal for conserving battery during long explorations. Technical divers, imagine coupling this light to your buoyancy compensator with the Connect-System, freeing your hands to handle a spare regulator or a dive log. Videographers will appreciate its neutral light spectrum (5,500 K) that faithfully reproduces colors, without overheating even during continuous use.

Its reinforced Delrin body, combined with a 4 mm thick anodized marine aluminum head, resists shocks and saline corrosion. Unlike competing models, its double Teflon O-rings require no lubrication, eliminating leak risks from impurities. Another innovation: the lithium EVO battery pack, secured against overvoltage, provides 2 hours of full-power autonomy and recharges in just 3 hours. Finally, its lightweight (480 g) and non-slip rubber ergonomic handle make it a discreet companion, even during cave dives requiring fine motor skills.
Made in France
Why choose the Light-X 7X over a generic model? Its CE certification and complete manufacturing in France guarantee spare parts availability for 10 years – a rare promise of longevity in a market saturated with disposable products. Tested by CNRS teams for the observation of abyssal ecosystems, it withstands dramatic pressure changes and extreme temperatures (-10°C to +40°C) flawlessly. Discover the Light-X 7X, and offer your dives a clarity previously reserved for professional missions.
Bersub: The legacy of a passion born in Savoy
Behind every light lies the DNA of a company founded in 1988, in the workshops of Saint-Genix-sur-Guiers. Raymond Bertois, a visionary founder, revolutionized underwater lighting by refusing to compromise between power and compactness. Today, Bersub equips the National Navy, IFREMER, and civil security professionals, proving that its standards exceed leisure. Each Light-X 7X comes off the production line after 17 rigorous tests, including spectral control with a professional spectrophotometer. This expertise, passed down to the second generation, combines artisanal tradition and cutting-edge technologies – such as using Nichia LEDs certified for their lifespan three times the market average.
By choosing Bersub, you embrace a philosophy: « Never sacrifice reliability for fashion ».