Steeldive 1000M Waterproof NH35 Dive Watch – 45.4MM Men’s
Product Overview
The Steeldive 1000M Waterproof NH35 Dive Watch is a rugged, precision-engineered automatic mechanical wristwatch built for serious divers and outdoor enthusiasts. Designed for men who demand reliability in extreme conditions, this watch combines professional-grade diving capabilities with everyday wearability. At its core is the trusted NH35 automatic movement, delivering consistent performance without the need for a battery. With a 45.4mm stainless steel case, sapphire glass, and a 1000-meter water resistance rating, it’s built to withstand deep-sea exploration as well as daily activities like swimming and handwashing. This is a tool watch that performs under pressure, offering durability, functionality, and a bold aesthetic for those who live an active lifestyle.
Key Features
- NH35 Automatic Mechanical Movement: Powered by the reliable Seiko NH35 caliber, this movement features two-way automatic winding, a stop-second device for precise time setting, and 24 jewels for reduced friction. It operates at a frequency of 21,600 vibrations per hour (3Hz) and delivers 41 hours of power reserve when fully wound, ensuring consistent timekeeping even after a day off the wrist.
- 1000M Water Resistance with Helium Escape Valve: Engineered for saturation diving, this watch is rated for depths up to 1000 meters. The inclusion of a helium escape valve allows safe use during professional decompression dives, making it suitable for technical divers and underwater professionals.
- Double-Domed Sapphire Crystal with Anti-Reflective Coating: The watch face is protected by synthetic sapphire glass with an anti-dazzling blue coating, offering exceptional scratch resistance and improved visibility in bright conditions. The double-domed shape enhances clarity and adds to the watch’s robust, tool-oriented design.
- Unidirectional Ceramic Bezel with 120 Clicks: The 120-tooth ceramic bezel rotates smoothly in one direction only, a critical safety feature for tracking elapsed dive time. Its ceramic construction resists fading, corrosion, and scratches, maintaining its appearance over years of use.
- Screw-Down Crown and Case Back: Both the crown and solid case back are screw-down types, ensuring a secure seal against water intrusion. This design contributes to the watch’s exceptional waterproof integrity and long-term durability.
- 316L Stainless Steel Construction: The case and bracelet are crafted from high-grade 316L stainless steel, known for its corrosion resistance and strength. The finishing combines sanding and polishing for a balanced, professional look that transitions easily from dive site to daily wear.
- Large, Legible Dial with Luminous Markers: Designed for underwater readability, the dial features high-contrast markers and hands treated with luminous material, ensuring visibility in low-light or murky conditions.
Technical Specifications
- Movement: NH35 automatic mechanical (two-way winding), 24 jewels, 21,600 vph (3Hz), 41-hour power reserve, stop-second function
- Case Material: 316L stainless steel
- Case Diameter: 45.40mm (excluding crown)
- Case Length: 54.85mm (top to bottom)
- Case Thickness: 17.10mm (including crystal and case back)
- Lug Width: 22mm
- Total Watch Weight: 258g (with steel bracelet)
- Bracelet Length: 260mm (total circumference)
- Crystal: Double-domed synthetic sapphire with anti-reflective blue coating
- Bezel: Ceramic, unidirectional, 120 clicks
- Crown: Screw-down type
- Case Back: Screw-in solid
- Water Resistance: 1000 meters (suitable for professional diving)
- Helium Escape Valve: Yes
- Model Number: SD1964
- ASIN: B09C4DGN92
- Department: Men’s
- Manufacturer: Steeldive
- First Available: August 1, 2021
Benefits & Use Cases
This dive watch is ideal for recreational and technical divers who need a reliable, high-performance timepiece capable of handling deep-water environments. Its 1000-meter water resistance and helium escape valve make it suitable for saturation diving, while the durable sapphire crystal and ceramic bezel ensure longevity in harsh conditions. Beyond diving, it functions exceptionally well as an everyday watch for active individuals—its robust build resists scratches and impacts, and the automatic movement eliminates the need for battery changes. The large 45.4mm case makes a bold statement on the wrist, appealing to those who appreciate tool watches with a commanding presence. Whether you’re exploring coral reefs, navigating urban environments, or simply seeking a dependable mechanical watch, the Steeldive SD1964 delivers consistent performance and rugged style.
Important Notes
The Steeldive 1000M Dive Watch is not discontinued and remains available for purchase. It includes a steel bracelet and weighs 1.1 pounds (258g), which may feel substantial on smaller wrists—consider wrist size before ordering. Product warranty details are available through the manufacturer’s support page. While the watch is designed for diving and daily wear, avoid exposing it to strong magnetic fields or extreme temperature shifts to maintain accuracy. Regular maintenance by a qualified watch technician is recommended for long-term performance.
