The Vostok-Europe SSN 571 bronze Mecha-Quartz Chronograph Submarine Watch (VK61/571O613) is a special timepiece that honors the US Submarine Service and the world's first nuclear-powered submarine, the SSN-571. This watch is the official timepiece of the SSN-571 Submarine Alumni Association and was designed in cooperation with the alumni members.

The watch features a Seiko VK61 Mecha-quartz chronograph movement, which combines the benefits of both quartz and mechanical movements. It is highly accurate and reliable, with the precision of a quartz movement and the smooth sweep of a mechanical movement.

The watch boasts 12 vertical tritium tubes mounted on the hands and in candle holder reflectors on the dial, making it easy to read the time in low-light conditions. It comes with two straps, one leather and one silicone, allowing for versatility in style and comfort.

The watch is packaged in a professional dive case, making it a perfect choice for those who enjoy diving and water activities. The 45.7mm bronze case, screw-down crown, unidirectional bezel, and 300m water resistance ensure that the watch is durable and long-lasting. The solid etched caseback adds a touch of elegance and sophistication to the watch.

This limited edition watch is limited to only 3000 pieces, making it highly sought-after by collectors. The brown dial with full lumed subdials adds to the overall appeal of the watch and ensures that the time is always easy to read.

In conclusion, the Vostok-Europe SSN 571 bronze Mecha-Quartz Chronograph Submarine Watch (VK61/571O613) is a special timepiece that honors the US Submarine Service and the world's first nuclear-powered submarine. Its Seiko VK61 Mecha-quartz chronograph movement, tritium tube illumination, and versatile strap options make it a highly functional and stylish watch. The watch's durable construction, water resistance, and limited edition status make it a perfect choice for watch collectors and diving enthusiasts alike.