Seiko 6309-7040 Turtle

The Seiko 6309-7040 'Turtle', produced from 1976 to 1988, is one of the most beloved vintage Seiko divers. Nicknamed for its distinctive cushion-shaped case, this iconic dive watch represents the golden age of mechanical diving instruments.
 
Key Features:
- Legendary 6309 automatic movement
- Distinctive cushion "Turtle" case
- Professional 150m dive rating
- Unidirectional rotating bezel
- Original Seiko lume
- Robust crown at 4 o'clock
- Classic dive watch design
- Exhibition caseback
- Original Seiko dive strap
 
Technical Specifications:
Movement: Seiko 6309 automatic caliber
Case: Stainless steel cushion design
Crystal: Original Seiko hardlex
Dial: Classic diver layout with large indices
Water Resistance: 150m dive rating
Bezel: Unidirectional 60-minute timing
 
Diving Heritage:
The 'Turtle' earned its reputation through years of reliable service in professional diving. Its robust construction, excellent water resistance, and practical features made it a favorite among both professional divers and enthusiasts.
 
Professional Features:
- Unidirectional safety bezel
- High visibility dial design
- Strong luminous markers
- Screw-down crown
- Reliable depth rating
- Robust case construction
 
Condition Details:
This example is presented in exceptional vintage condition. The automatic movement has been professionally serviced, and all diving functions operate as designed. The case retains its original finish, and the bezel action remains crisp and precise.
 
Iconic Design Elements:
- Cushion "Turtle" case shape
- Protected crown at 4 o'clock
- Large luminous markers
- Classic dive bezel design
- Professional dive strap
- Seiko tsunami case back
 
Complete Package Includes:
- Original Seiko dive strap
- Service documentation
- Original box
- Diving timing instructions
- Period-correct papers
 
Investment Appeal:
The 6309 'Turtle' has seen steady appreciation due to:
- Iconic design status
- Robust build quality
- Growing vintage diver market
- Practical usability
- Strong collector following
 
Historical Significance:
- Key model in Seiko's dive watch history
- Used by professional divers worldwide
- Influenced modern dive watch design
- Represents peak of mechanical dive watches
- Benchmark for recreational diving timepieces
 
Perfect For:
This timepiece is ideal for collectors seeking an iconic vintage dive watch that can still be used for its intended purpose. Its combination of classic design, proven reliability, and professional specifications makes it a cornerstone piece for any vintage dive watch collection.