Vintage Scubapro 450 JDM Auto Diver (6306-7001)

The Seiko 6306-7001 Scubapro 450 is special because it combines rare JDM production, a reliable hacking movement, and the unique Scubapro branding. Collectors value its strong dive design, limited availability, and genuine connection to professional diving.

The Seiko 6306-7001 Scubapro 450 has a bold, highly legible dial built for real diving. Its large rectangular hour markers, strong lume, and clean black background make it easy to read in low light. The cushion-shaped 44 mm case gives the watch its classic “turtle” profile, offering comfort and durability. The bezel is simple and functional, and the Hardlex crystal adds toughness without glare. The rubber strap keeps the watch light and practical, matching the tool-watch character of the design.

Inside the watch is Seiko’s 6306 automatic movement, a reliable workhorse created for the Japanese domestic market. It features hacking seconds, a smooth hand-winding action, and strong accuracy for a vintage diver. The movement is known for its durability and easy serviceability, which helps keep these watches running well decades after they were made. It is a simple, honest mechanical engine that fits the practical spirit of this model.

The 6306-7001 Scubapro 450 has become one of the most sought-after Seiko divers because of its limited production and special connection to the Scubapro brand. Seiko released it in the late 1970s as a higher-grade variant of its famous “turtle” dive watches, and it was sold mainly in Japan. The Scubapro 450 logo on the dial makes it even rarer and ties it to professional diving culture. Today, collectors value it as a historical piece from Seiko’s golden era of tool watches, combining scarcity, strong design, and authentic dive heritage.

The watch appears to be in excellent condition,This item has been gently used but is in good condition. It might have a few signs of wear, like light scratches or tarnishing. lear, indicating careful use and good maintenance.

What do the different grading scores mean?

• BN 9.9: Brand new and unworn, with no signs of use.
• UN 9.5: Like new and unworn, but may lack original packaging or materials such as the box, links, tags, or bezel protector.
• LN 9.0: Like new and unworn, but only includes the watch without papers, box, or accessories.
• MT 8.5: Mint condition, lightly used with minor surface scratches or wear. Unpolished.
• VG 8.0: Moderately used, with scratches and one or two nicks on the case or crystal. Shows signs of polishing. The bracelet remains snug with minimal wear.
• GD 7.5: Shows signs of daily wear but is not abused, with noticeable polishing on the case. The bracelet shows clear signs of daily wear.

Watches with a rating below GD 7.5 are not listed for bidding to ensure that only high-quality timepieces are available to our members.