Key aspects of the Great Lakes Diver include:

1. Enhanced Water Resistance: Tested to withstand pressures up to 1000 feet (300 meters), this watch is suitable for deep diving activities, ensuring reliability under extreme underwater conditions.

2. Unique Design Inspired by Great Lakes: The Great Lakes Diver series includes three dials, each named after a notable Great Lakes dive site. The Black version is named after Sanilac Shores, capturing the essence of the renowned diving destination.

3. Quality Movement: It features a regulated Sellita SW200-1 movement, known for its precision. With a beat rate of 28,800 vibrations per hour, the watch has been enhanced to ensure added accuracy.

4. Limited Edition Series: With only 400 units produced, each watch is unique and comes with its own serial number, adding to its exclusivity.

5. Versatile Strapping Options: The watch comes with both a canvas strap and a leather band, offering versatility in style and functionality.

6. Durable and Elegant Materials: The case is made from 316L stainless steel with brushed finishes, providing durability and a sophisticated look. It features thick domed sapphire crystal glass with a 4.0mm thickness and an anti-reflective coating for clear visibility underwater.

7. Internal Diving Bezel: The watch boasts an internal rotating bezel in a compressor-style case, enhancing its functionality for divers.

8. Automatic, Self-Winding Mechanism: The automatic movement of the watch eliminates the need for batteries, as it winds itself with the movement of the wearer's wrist.

9. Technical Specifications: The Great Lakes Diver has a case diameter of 39.7mm, a thickness of 13.5mm, and a lug width of 20mm. Its water resistance is rated at 300 meters (1000 feet or 30 ATM), and it has a power reserve of 40 hours.

In summary, the Ocean Crawler Great Lakes Diver - Black combines superior craftsmanship, distinctive design inspired by the Great Lakes, and high functionality, making it a top choice for divers and water sports enthusiasts seeking a reliable and stylish diving watch.