Tissot Seastarprofessional Blue Gradient Dial Automatic Men 44mm T1209071704100

Engineered for deep-sea exploration and oceanic sport performance, the Tissot Seastar Professional Powermatic 80 44mm T120.907.17.041.00 fuses maritime functionality with Swiss mechanical mastery. Built inside an athletic 44 mm 316L stainless steel case, this professional diver features a deep blue gradient dial transitioning to black, a unidirectional rotating dive bezel with an engraved 60-minute scale, high-visibility Super-LumiNova® indices, an exhibition sapphire case back, and the Swiss Powermatic 80 automatic calibre fitted with an anti-magnetic Nivachron™ hairspring. Delivering an autonomous 80-hour power reserve, 300-metre water resistance, and an ergonomic rubber dive strap, it is equipped for serious underwater expeditions and commanding wrist presence.

Key Highlights

• Swiss Automatic Powermatic 80 Calibre: Self-winding mechanical movement beating at 21,600 vibrations per hour, providing an extended 80-hour autonomous power reserve.

• Patented Nivachron™ Balance Spring: High-tech titanium-alloy hairspring delivering enhanced resistance against magnetic fields, temperature fluctuations, and mechanical shocks.

• Oceanic Blue Gradient Sunray Dial: Shimmering gradient dial shifting from vibrant ocean blue at the center to deep abyssal navy-black at the perimeter.

• Unidirectional Rotating Dive Bezel: High-grip knurled bezel featuring an engraved 60-minute graduation scale with a luminescent pip at 12 o'clock for accurate dive-time monitoring.

• Professional 300-Metre Water Resistance: Pressure rated for 30 bar (300 m / 1,000 ft) with a screw-down crown and screw-down case back for dependable underwater sealing.

• Scratch-Resistant Sapphire Crystal: High-clarity sapphire glass treated with anti-reflective coating on both faces for crisp, reflection-free visibility under water and in direct sunlight.

• Transparent Exhibition Case Back: Sapphire crystal case back displaying the decorated Powermatic 80 movement, escapement, and signed rotor.

• High-Performance Rubber Dive Strap: Flexible, waterproof synthetic rubber strap fitted with a 316L stainless steel pin buckle and quick-release spring bars.

• Official Tissot International Warranty: Fully covered worldwide under Tissot’s 2-year authorized manufacturer guarantee.

Design & Craftsmanship

Maritime Heritage & Deep-Sea Architecture

Designed to withstand the extreme pressures of the ocean, the Seastar collection embodies Tissot’s long-standing connection to aquatic timekeeping. In this 44.00 mm format, the watch commands the wrist while providing a large dial opening for instant low-light legibility. The brushed 316L stainless steel case is sculpted with robust lateral crown guards to protect the screw-down crown from direct impacts against boat surfaces and diving gear.

Abyssal Blue Gradient Dial & Luminescence

The gradient dial captures the shifting hues of sunlight filtering down through ocean depths. Accented by large, applied geometric indices and wide sword hands coated with high-grade Super-LumiNova®, the dial glows brightly in dark underwater environments and low-light evening conditions.

Powermatic 80 Engine with Nivachron™ Resilience

Beneath the dial beats the Swiss-made Powermatic 80 automatic calibre. Delivering up to 80 hours of power reserve, the watch remains fully wound across an entire weekend off the wrist. Its patented Nivachron™ balance spring shields the escapement against electromagnetic interference produced by boat engines, marine instruments, and everyday electronic devices.