- Case Size 3H-9H:41.8mm
- Case Size 12H-6H:46.8mm
- Case Material:Stainless Steel
- Caseback Structure:Screw Case back
- Crown:Screw
- Glass Material:Sapphire Crystal Glass
- One-Way Rotating Bezel:Yes (uni-directional rotating bezel)
- Automatic Self-Winding:Yes
- Jewels:22 Jewels
- Vibration:21,600 vibration/hour
- Hand Winding:Yes
- Movement:Mechanical
- Caliber Code:Cal.F6922
- Second Hand Halt Mechanism:Yes
- Day:Yes
- Date:Yes
- Water Resistance:20bar(200m)
This series has a dolphin icon engraved on the caseback and is affectionally known as Orient Mako, and since its launch in 2004 the model has been released in a wide variety of dial colours and details.
A distinctive characteristic of the limited-edition 20th anniversary model is the blue dial. The dial features Arabic numerals, a design signature of Diver design models since its launch in 2004. The blue gradation from 12 o’clock to 6 o’clock represents the beautiful ocean that surrounds Japan, while the dial’s stamped wave pattern, coupled with the words “Anniversary Edition” at 4 o’clock and spectacular gold-coloured hands, highlight the celebratory feel of the 20th anniversary model.