42mm Automatic Compressor Dive Watch – Miyota 8215, Sapphire & 20 ATM

Built for enthusiasts who appreciate serious dive-watch specifications and mechanical engineering, this automatic compressor-style dive watch combines a Japanese Miyota 8215 movement, 316L stainless steel construction, sapphire crystal and 200 m / 656 ft water resistance.

Its distinctive dual-crown configuration controls the watch and its internal rotating timing bezel, while powerful luminous elements provide excellent visibility in low-light conditions.

🌊 200M / 20 ATM Dive-Ready Water Resistance

With a screw-down crown and water resistance rated to 200 meters / 656 feet / 20 ATM, this model is designed for swimming, water sports and recreational diving.

The internal timing scale provides a functional diving-inspired display while remaining protected beneath the sapphire crystal.

⚙️ Japanese Miyota 8215 Automatic Movement

At its heart is the proven Miyota 8215 automatic mechanical movement, manufactured in Japan.

It features:

• Automatic self-winding
• Manual winding capability
• Approximate stated accuracy of -20 to +40 seconds/day
• Mechanical operation without a conventional quartz battery

The movement can also be viewed through the sapphire exhibition case back.

💎 Sapphire Crystal Front & Back

Both the front crystal and exhibition case back use sapphire glass, providing excellent scratch resistance and clarity.

The front sapphire crystal also features an anti-reflective coating to improve dial visibility.

🌙 Super-Luminous Display 

Large luminous hour markers and hands provide strong nighttime visibility.

Contrasting luminous elements make the dial particularly easy to read in darkness and underwater, while the orange accents add a distinctive technical appearance.

🔄 Internal Rotating Dive Bezel

Rather than using a conventional exposed rotating bezel, this model incorporates a rotating inner timing ring controlled by the additional crown.

This compressor-inspired configuration gives the watch a distinctive technical appearance while keeping the timing scale beneath the crystal.

🛡️ 316L Stainless Steel Construction

The case is manufactured from 316L stainless steel, offering excellent durability and corrosion resistance.

The stainless steel bracelet versions provide a substantial feel on the wrist, weighing approximately 182 g / 6.4 oz.

Silicone-strap configurations are significantly lighter at approximately 113 g / 4.0 oz.

📏 Dimensions & Specifications

Movement: Japanese Miyota 8215 automatic mechanical
Case diameter: 42 mm / 1.65 in
Case thickness: 13 mm / 0.51 in
Lug-to-lug: 49.3 mm / 1.94 in
Strap width: 22 mm / 0.87 in
Maximum wearable length: approx. 205 mm / 8.07 in
Case material: 316L stainless steel
Front crystal: Sapphire with AR coating
Case back: Sapphire exhibition back
Water resistance: 200 m / 656 ft / 20 ATM
Steel bracelet weight: approx. 182 g / 6.4 oz
Silicone strap weight: approx. 113 g / 4.0 oz
Crown: Screw-down
Display: Analog
Functions: Time, date, luminous display, internal rotating timing bezel

🎁 A Serious Mechanical Sports Watch

The combination of a Miyota automatic movement, 200 m water resistance, sapphire crystal, 316L stainless steel and compressor-style internal timing bezel gives this watch specifications that go well beyond those of a basic fashion watch.

Its 42 mm / 1.65 in case also offers a substantial sports-watch presence without becoming excessively oversized.