Inspired by watches like the iconic Chronosport UDT and Sea Quartz 30, the SQ30 Eclipse Black-Ion blends classic military style with new solar technology. In serious situations, standing out can be deadly. That is why special forces loved the low-key black case of the original UDT watch. Other traits of the Chronosport UDT also remain — it's legible, reliable, low-maintenance, and most importantly, still affordable. The fact that solar movements are also better for the environment, result in fewer batteries ending up in landfills, have longer service intervals, and come standard with a 6-year warranty is not so bad either. Rubber Nato Strap Iconic design based on one of the first quartz dive watches Screw-down crown and 300M water-resistance rating Thick C3 Super-LumiNova luminous markers, hands, and bezel Scratchproof sapphire crystal and bezel insert Japanese solar-powered movement that charges in any light Can run for up to 6 months in pitch darkness Black-ion plated matte stainless steel case Movement: Japanese, Solar (Epson VS42A) Dial Color: Black Crown: Screw-down crown Water Resistance (m/ft) : 300 / 990 Case Material: Black-ion plated stainless steel Crystal: Sapphire Only Case Diameter: 42mm Case Height: 12.6mm Lug Width: 20mm Lug-to-Lug: 47mm