Tandorio 39mm Dive Watch – NH35 Automatic, Sapphire, 20ATM

Tandorio 39mm Automatic Dive Watch | NH35 Movement | Sapphire Crystal | 20ATM Water Resistance

Meet the Tandorio 39mm Automatic Mechanical Dive Watch — a precision-engineered timepiece built for adventurers, divers, and watch enthusiasts who demand reliability and style. Powered by the legendary Miyota NH35A 24-jewel automatic self-winding movement, this watch delivers smooth, battery-free timekeeping you can count on. With a scratch-resistant sapphire crystal dial window, robust case material options, and an impressive 20ATM (200-metre) water resistance rating, this watch is ready for the deep end.

Key Features

• Movement: Miyota NH35A automatic self-winding, 24 jewels — reliable, accurate, and battery-free
• Case Diameter: 39mm — a classic, versatile size that suits most wrist sizes
• Case Thickness: 12.2mm — slim enough for everyday wear
• Case Material: Choice of solid 316L stainless steel, bronze, or titanium
• Dial: Clean numberless design in brown/silver — elegant and sporty
• Crystal: Sapphire crystal — highly scratch-resistant and optically clear
• Water Resistance: 20ATM (20 Bar / ~200 metres) — suitable for swimming, snorkelling, and recreational diving
• Crown: Screw-down crown for superior water-tight sealing
• Strap Width: 20mm leather strap with bracelet clasp
• Case Shape: Classic round
• Style: Fashion-forward yet functionally sporty — transitions from ocean to office effortlessly

Why Choose the Tandorio Dive Watch?

The NH35A calibre is renowned in the watch community for its durability and accuracy, offering a power reserve of approximately 41 hours. The sapphire crystal glass resists scratches far better than standard mineral glass, keeping your dial looking pristine for years. The screw-down crown is a hallmark of serious dive watch design, ensuring the case is sealed tightly against water ingress even under pressure.

Whether you're exploring the reef, hitting the gym, or sitting in a boardroom, the Tandorio 39mm wears beautifully. Its sub-42mm case keeps it versatile — large enough to make a statement, refined enough never to overwhelm the wrist.

Made in Mainland China.

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Authoritative Reference

For guidance on water resistance ratings and watch care standards, visit the National Institute of Standards and Technology (NIST), the authority on measurement and materials standards in the United States.

Specifications at a Glance

Frequently Asked Questions

Q: What is the water resistance rating of the Tandorio 39mm dive watch?

A: The Tandorio 39mm dive watch is rated at 20ATM (20 Bar, approximately 200 metres). This makes it suitable for swimming, snorkelling, and recreational scuba diving. The screw-down crown ensures the case maintains a watertight seal under pressure. Always ensure the crown is fully screwed in before entering water.

Q: What movement does the Tandorio 39mm watch use, and is it reliable?

A: This watch is powered by the Miyota NH35A automatic self-winding movement with 24 jewels. The NH35A is widely regarded as one of the most reliable and accurate automatic movements available in its price range, offering approximately 41 hours of power reserve and a frequency of 21,600 beats per hour. It requires no battery — it winds itself using the natural motion of your wrist.

Q: What case material options are available for this Tandorio dive watch?

A: The watch is available in three case material variants: solid 316L stainless steel (corrosion-resistant and durable), bronze (develops a unique patina over time), and titanium (lightweight and hypoallergenic, ideal for those with sensitive skin or who prefer a lighter watch).

Q: Is the sapphire crystal on this watch scratch-resistant?

A: Yes. Sapphire crystal is one of the hardest materials used in watchmaking, ranking 9 on the Mohs hardness scale (second only to diamond). It offers excellent scratch resistance compared to standard mineral glass, keeping your dial clear and readable for years of daily wear.