Dive Watch, Automatic Watches for Men with Stainless Steel

Product Overview

The Pantor Sealion is a purpose-built automatic dive watch designed for men who value precision, durability, and functional design. Crafted with a focus on utility, this timepiece blends professional diving capabilities with everyday wearability. Its 42mm stainless steel case and matching bracelet offer a balanced fit for most wrist sizes, making it suitable for both active use and casual occasions. Built to withstand underwater environments, it features 300-meter water resistance and a helium escape valve, ensuring reliability during deep dives. Whether you’re exploring the ocean depths or navigating daily life, the Sealion delivers consistent performance with a design rooted in mechanical tradition.

Key Features

• Automatic Mechanical Movement: Powered by the original Japanese SII NH35A movement with 24 jewels, 21,600 beats per hour, and approximately 41 hours of power reserve for reliable, self-winding operation.
• Professional Dive Readiness: Rated for 300 meters (990 feet) water resistance, meeting professional diver standards with a screw-down crown and unidirectional rotating bezel for safe underwater timing.
• Sapphire Crystal Protection: Features scratch-resistant sapphire crystal to maintain clarity and durability against daily wear and harsh conditions.
• Enhanced Visibility in Low Light: Equipped with Swiss C3 Super LumiNova on the hands and hour markers (1–12H), ensuring excellent legibility in dark or underwater environments.
• Helium Escape Valve: Located at the 9 o’clock position, this automatic valve allows safe decompression during saturation diving, a critical feature for technical divers.
• Durable Stainless Steel Construction: Constructed from 316L stainless steel for the case and bracelet, offering corrosion resistance and a polished, sporty appearance.
• Functional Bezel Design: The stainless steel bezel includes aluminum inlays for clear, long-lasting markings and smooth, precise rotation.
• Date Display: Integrated date calendar at the 3 o’clock position for added practicality in daily use.
• Secure Bracelet with Extension: Includes a high-quality stainless steel bracelet with an extension buckle for easy wear over a wetsuit or glove.

Technical Specifications

• Movement: Original Japanese SII NH35A automatic mechanical movement
• Case Material: 316L stainless steel
• Case Diameter: 42.00mm
• Case Thickness: 12.6mm
• Bracelet Material: 316L stainless steel
• Dial Opening Diameter: 29mm
• Dial Thickness: 0.6mm
• Luminous Elements: Swiss C3 Super LumiNova on hands and 1–12 hour markers
• Water Resistance: 300 meters / 990 feet
• Crystal: Sapphire
• Bezel: Stainless steel with aluminum inlays
• Special Features: Automatic helium escape valve at 9H, screw-down crown, date display
• Package: Includes a protective box

Benefits & Use Cases

The Pantor Sealion is ideal for divers, outdoor enthusiasts, and watch collectors seeking a reliable mechanical timepiece with professional-grade features. Its 300-meter water resistance and helium valve make it suitable for recreational and technical diving, while the robust stainless steel build ensures longevity in rugged environments. The 42mm case size provides a substantial yet comfortable fit for most men, and the bracelet’s extension buckle allows for easy adjustment over dive gear. Beyond diving, its clean design and functional layout make it a versatile choice for daily wear, sports, and travel. The automatic movement eliminates the need for battery changes, offering convenience and sustainability for long-term use.

Important Notes

This watch is not discontinued by the manufacturer and was first made available on August 10, 2017. It ships in a protective box and is classified under men’s wrist watches. The item model number is “Sealion,” with an ASIN of B074QK6GJX. Package dimensions are 7.6 x 3.7 x 2.6 inches, weighing 4.06 ounces. For warranty details, customers should refer to the manufacturer’s official policy. While the watch is built for durability, proper care—such as avoiding impacts and rinsing after saltwater exposure—is recommended to maintain its condition over time.

The Pantor Sealion series reflects the brand’s commitment to mechanical excellence and functional innovation. Designed with the principle of “form follows function,” every element of this watch serves a practical purpose—from the screw-down crown that ensures water tightness to the unidirectional bezel that prevents accidental timing errors during dives. The 316L stainless steel construction not only resists corrosion from saltwater but also maintains its polished finish over years of use. The inclusion of a sapphire crystal further enhances durability, offering superior scratch resistance compared to standard mineral glass.

For those who value self-sufficiency in their timepieces, the automatic movement winds itself through natural wrist motion, eliminating the need for batteries or manual winding under normal use. The 41-hour power reserve ensures the watch continues running even after a day of inactivity. The date function at 3 o’clock adds everyday utility, while the luminous markers and hands—coated with Swiss C3 Super LumiNova—ensure visibility in low-light conditions, whether underwater or during nighttime activities.

The helium escape valve, positioned at 9 o’clock, is a specialized feature for saturation divers who undergo prolonged underwater exposure in pressurized environments. During decompression, trapped helium molecules can build pressure inside the watch; the automatic valve releases this gas safely, preventing damage to the crystal or case. This makes the Sealion a trusted companion for technical diving operations.

The bracelet is engineered for both comfort and practicality. Its 316L stainless steel links are robust yet flexible, and the extension buckle allows for quick sizing adjustments—ideal when wearing the watch over a wetsuit. The clasp is secure and easy to operate, even with gloves. The overall weight and balance of the watch contribute to a confident, substantial feel on the wrist without being overly heavy.