Seiko Prospex Mechanical Automatic PADI Special Edition
Product Overview
The Seiko Prospex Mechanical Automatic PADI Special Edition Turtle Diver’s Watch SRPE99 is a professional-grade timepiece designed for serious divers and watch enthusiasts. Built in Japan with precision engineering, this model combines Seiko’s renowned automatic movement with PADI’s legacy in diving excellence. It features a distinctive “Turtle” case design that offers both rugged durability and classic dive watch aesthetics. With 200 meters of water resistance and a full suite of dive-ready functions, it’s built for underwater performance while remaining stylish enough for everyday wear. This special edition is ideal for certified divers, collectors, and anyone who values reliable, high-performance Japanese craftsmanship.
Key Features
- Mechanical Automatic Movement (Caliber 4R36): The in-house Seiko 4R36 caliber delivers reliable self-winding performance with the option for manual winding. It operates without batteries, powered by the natural motion of the wearer’s wrist, making it both eco-friendly and low-maintenance.
- 200 Meter Water Resistance: Engineered for serious diving, this watch meets ISO standards for scuba diving with a robust construction that withstands pressures at depths up to 200 meters. The screw-down crown and case back ensure a secure seal against water intrusion.
- Unidirectional Rotating Bezel with Aluminum Insert: The anti-reverse stainless steel bezel features a durable aluminum display plate with clear, legible markings for tracking elapsed dive time. Its precise 120-click mechanism prevents accidental rotation, enhancing safety during underwater use.
- LumiBright Luminous Display: Hands, hour markers, and the bezel are coated with Seiko’s proprietary LumiBright material, providing bright, long-lasting visibility in low-light and underwater conditions. Essential for reading time in dark or murky environments.
- Stainless Steel Case and Bracelet with Diver Extender: The 4R36-powered watch is housed in a corrosion-resistant stainless steel case with a matching three-link bracelet. The one-push diver extender clasp allows for easy adjustment over a wetsuit, while the double lock mechanism ensures the bracelet stays securely fastened during active use.
- Hardlex Crystal Lens: Offers excellent scratch resistance and clarity, protecting the dial from impacts and abrasions commonly encountered during diving and outdoor activities.
- Date and Day Calendar Function: Conveniently displays both date and day of the week at the 3 o’clock position, adding practical utility for daily wear beyond diving.
- Special Edition PADI Collaboration: This model includes a special edition label, celebrating Seiko’s partnership with PADI (Professional Association of Diving Instructors), making it a collectible piece for diving professionals and enthusiasts.
Technical Specifications
- Caliber: 4R36
- Drive Method: Mechanical automatic winding (with hand winding capability)
- Accuracy: +45 to -35 seconds per day
- Power Reserve: Approximately 41 hours when fully wound
- Case Material: Stainless steel
- Bezel Material: Stainless steel with aluminum display plate
- Glass Material: Hardlex crystal
- Luminous Features: LumiBright on hands, indices, and bezel
- Band Material: Stainless steel
- Clasp Type: One-push diver extender with double lock
- Water Resistance: 200 meters (suitable for scuba diving)
- Additional Functions: Screw lock crown, screw back case, anti-reverse bezel, second hand hacking function, 24-jewel movement
- Model Number: SRPE99
- Manufacturer: SEIKO
- Origin: Made in Japan
- Package Dimensions: 5.71 x 3.94 x 3.74 inches; 12.87 ounces
- Department: Men’s
- ASIN: B0DCTMG22C
- Date First Available: August 23, 2025
Benefits & Use Cases
This watch is purpose-built for divers who demand reliability and precision. Its 200-meter water resistance and unidirectional bezel make it fully compliant with recreational scuba diving requirements. The LumiBright illumination ensures critical time readings remain visible at depth or during night dives. The robust stainless steel construction resists corrosion from saltwater exposure, while the diver extender clasp allows secure wear over a wetsuit. Beyond diving, its classic Prospex design and automatic movement make it a versatile choice for daily wear, travel, or outdoor adventures. The PADI Special Edition marking adds collectible value, appealing to certified divers and watch collectors alike.
Important Notes
Due to manufacturing processes, there may be slight variations in the orientation of the screw back case. The watch comes with a special edition label indicating its collaboration with PADI. For warranty details, customers should refer to the manufacturer’s official policy. This model is part of Seiko’s overseas lineup and may differ in regional availability. Regular maintenance is recommended to preserve water resistance and movement accuracy, especially after exposure to saltwater or heavy use.
