Ultradive “Atoll”

The Sherpa Ultradive Atoll is a technically sophisticated dive watch that blends vintage design with modern engineering. Crafted from polished stainless steel, it features a 40mm diameter and 13.5mm height, with a domed sapphire box glass treated to reduce glare. Its standout aqua blue/turquoise dial evokes tropical atolls and is paired with diamond-cut indices and hands, all enhanced with Swiss Super-LumiNova Grade X1 for optimal legibility. The watch employs a true compressor system for water resistance, using rising water pressure to seal both the EPSA-STOP bayonet case back and proprietary MONOFLEX crowns—non-screw-down yet highly secure. Certified to ISO 6425 standards, it withstands depths up to 200 meters and is tested to 25 bar. Inside, the Mantramatic MM01 movement, based on the Sellita SW200-1, includes a unique spiritual complication: micro-laser engraved Tibetan mantras on the seconds and escape wheels, emitting over 30 million vibrations annually. This fusion of mechanical precision and cultural homage is housed in a robust case with full crown protection and paired with a vulcanised rubber strap.