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Nautilus - Open Heart - Brown

Experience the perfect harmony of sport and sophistication with our 40mm Nautilus. Its bold silhouette is balanced by refined details, creating a timepiece that transitions seamlessly from boardroom to weekend. The open-heart window reveals the rhythm of the renowned NH38 movement, a reminder of the craftsmanship within. Protected by a sapphire crystal, screw-down crown, and premium 904L surgical-grade stainless steel, the Nautilus is built to endure while exuding timeless elegance. A true statement of luxury, designed for those who demand both strength and style.

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  • Specifications
  • Care Instructions
  • Warranty
  • Movement: NH38 Automatic Movement
  • Power Reserve: 40 Hours
  • Diameter: 40mm
  • Case: 904L Stainless Steel
  • Caseback: Exhibition
  • Dial: Open Heart
  • Crown: Screw Down Crown
  • Crystal: Sapphire
  • Water Resistance: 50 Meters
  • Luminova: Hands and Hour Indices
  • Bracelet: Integrated
  • Clasp: Butterfly
  • Wrist Size: 5.7in to 8.6in
  • Thickness: 12.2mm

Crown Positions

  • Position 0: Crown screwed in – normal running & manual winding
  • Position 1: Crown pulled out two clicks – sets main time (hour & minute hands)

Winding & Power Reserve

  • The NH38 is automatic and winds itself while worn. Wearing it for ~8 hours a day will keep it fully charged (up to 40 hours of power reserve).
  • If the watch has stopped, set the crown to Position 0 and wind it 20–30 turns clockwise.

⚠️ Don’t overwind — the built-in clutch will stop excess tension, but slow, steady turns are best.

Setting the Time

  1. Pull the crown to Position 1 (one click out).
  2. Turn the crown to move the hour and minute hands forward until the correct time is set.
  3. Push the crown back to Position 0 and screw down when finished.


⚠️Always set the time forwards, not backwards.

Cleaning & Care

  • Wipe the case and strap/bracelet with a soft microfiber cloth after wear.
  • For metal bracelets, use mild soapy water, then rinse and dry thoroughly.
  • Avoid exposing the watch to strong magnets, extreme shocks, or hot water/steam.

⚠️Only water resistant when crown is completely screwed down

All of our timepieces come with a 2-year warranty, which covers the functionality of the movement if case hasn't been opened. Any defects in materials and workmanship endured under normal use are also covered.

Processing Claims

For Warranty claims, contact us at thehoodluminc@gmail.com to determine the problem and the most suitable solution for you. You will also need to provide your proof of purchase with an invoice or receipt.

Coverage Scope

The Hoodlum Inc. warranty does not cover damage resulting from misuse, including but not limited to impacts, accidents, magnetism, general wear and tear, or breakage. However, we do offer repair and replacement of broken or damaged parts due to wear and tear for a fee. Please note that all return shipping costs are the responsibility of the purchaser.

  • Movement: NH38 Automatic Movement
  • Power Reserve: 40 Hours
  • Diameter: 40mm
  • Case: 904L Stainless Steel
  • Caseback: Exhibition
  • Dial: Open Heart
  • Crown: Screw Down Crown
  • Crystal: Sapphire
  • Water Resistance: 50 Meters
  • Luminova: Hands and Hour Indices
  • Bracelet: Integrated
  • Clasp: Butterfly
  • Wrist Size: 5.7in to 8.6in
  • Thickness: 12.2mm

Crown Positions

  • Position 0: Crown screwed in – normal running & manual winding
  • Position 1: Crown pulled out two clicks – sets main time (hour & minute hands)

Winding & Power Reserve

  • The NH38 is automatic and winds itself while worn. Wearing it for ~8 hours a day will keep it fully charged (up to 40 hours of power reserve).
  • If the watch has stopped, set the crown to Position 0 and wind it 20–30 turns clockwise.

⚠️ Don’t overwind — the built-in clutch will stop excess tension, but slow, steady turns are best.

Setting the Time

  1. Pull the crown to Position 1 (one click out).
  2. Turn the crown to move the hour and minute hands forward until the correct time is set.
  3. Push the crown back to Position 0 and screw down when finished.


⚠️Always set the time forwards, not backwards.

Cleaning & Care

  • Wipe the case and strap/bracelet with a soft microfiber cloth after wear.
  • For metal bracelets, use mild soapy water, then rinse and dry thoroughly.
  • Avoid exposing the watch to strong magnets, extreme shocks, or hot water/steam.

⚠️Only water resistant when crown is completely screwed down

All of our timepieces come with a 2-year warranty, which covers the functionality of the movement if case hasn't been opened. Any defects in materials and workmanship endured under normal use are also covered.

Processing Claims

For Warranty claims, contact us at thehoodluminc@gmail.com to determine the problem and the most suitable solution for you. You will also need to provide your proof of purchase with an invoice or receipt.

Coverage Scope

The Hoodlum Inc. warranty does not cover damage resulting from misuse, including but not limited to impacts, accidents, magnetism, general wear and tear, or breakage. However, we do offer repair and replacement of broken or damaged parts due to wear and tear for a fee. Please note that all return shipping costs are the responsibility of the purchaser.

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