Seestern Heritage Diver – Automatic Professional Wristwatch

Engineering Excellence & Heritage Design

The Seestern SUB600T V3 is a masterclass in modern dive watch engineering, paying homage to the iconic "squarish" case designs of the 1970s. Built for those who demand a rugged tool watch with high-end finishing, the V3 iteration brings refined proportions and the rock-solid reliability of the Seiko NH35 movement. Whether you are exploring the depths or navigating the daily grind, the SUB600T V3 is designed to be your most resilient companion.

Key Features

⚓ The Iconic 600T Silhouette The SUB600T V3 features a distinct 40mm brushed stainless steel case with sharp, angular lugs and a recessed crown at 4 o'clock. This unique geometry provides an incredibly comfortable fit on the wrist while maintaining a bold, professional aesthetic.

⚙️ Seiko NH35 Automatic Movement At the heart of this timepiece is the legendary Seiko NH35 caliber. This 24-jewel workhorse features a 41-hour power reserve and hacking/hand-winding capabilities. Known for its "set-it-and-forget-it" reliability, this movement ensures your watch stays ticking through any adventure.

💎 Unscratchable Sapphire & Ceramic The dial is protected by a thick flat sapphire crystal with an inner anti-reflective (AR) coating for crystal-clear legibility. Surrounding it is a 120-click unidirectional ceramic bezel, providing a high-gloss finish that is virtually immune to scratches and fading.

🌊 Professional-Grade Water Resistance True to its diving DNA, this timepiece is rated for 200M (20 ATM) water resistance. Featuring a secure screw-down crown and a solid stainless steel case back, it is fully equipped for professional diving, swimming, and heavy water sports.

✨ Swiss Super-LumiNova The hands, hour markers, and bezel pip are treated with high-grade luminous pigment, providing a bright, long-lasting glow that ensures high visibility in low-light environments or deep underwater.