Description

General Information:

• Model Name: Seiko Prospex PADI SRPA21K1
• Nicknamed: “Turtle” due to its cushion-shaped case
• Edition: PADI Special Edition (Professional Association of Diving Instructors collaboration)
• Purpose: Dive Watch

Movement:

• Caliber: Seiko 4R36
• Type: Automatic with manual winding capability
• Functions: Hours, minutes, seconds, day, and date
• Hacking Feature: Yes (stops the second hand for precise time setting)
• Jewels: 24 jewels
• Power Reserve: Approximately 41 hours
• Frequency: 21,600 vibrations per hour (6 beats per second)

Case:

• Material: Stainless steel
• Diameter: 45.0mm
• Thickness: 13.4mm
• Lug-to-Lug: 48.0mm
• Shape: Cushion (turtle-inspired)
• Case Back: Screw-down, stainless steel, with branding
• Crown: Screw-down, located at 4 o’clock for ergonomic comfort

Crystal:

• Material: Seiko Hardlex (hardened mineral crystal)
• Features: Durable and scratch-resistant

Dial and Hands:

• Dial Color: Blue sunburst with PADI logo
• Markers: Applied, filled with Seiko Lumi Brite for excellent visibility in low light
• Hands: Luminescent, with Lumi Brite applied
• Day/Date Display: Located at 3 o’clock; bilingual (English and another language, typically Kanji)

Bezel:

• Type: Unidirectional rotating bezel
• Material: Stainless steel with aluminum insert
• Design: “Pepsi” color scheme (blue and red)
• Purpose: Dive timer functionality

Strap (Belt Version):

• Material: Silicone or Rubber strap
• Color: Black
• Width: 22mm
• Clasp: Buckle
• Design: Textured for a secure fit and comfort underwater

Water Resistance:

• Rating: 200 meters (20 bar / 660 feet)
• Standards: ISO-certified for scuba diving

Additional Features:

• Lumi Brite: On hands, markers, and bezel pip for long-lasting luminescence
• PADI Logo: Featured prominently on the dial
• Durability: Highly resistant to shocks and magnetic fields
• Accuracy: -35/+45 seconds per day (typical for the 4R36 movement)