Tissot Seastar 1000 Quartz Chronograph (Ref. T120.417.11.051.01)
Dive Chronograph · Tissot (Swatch Group); Mid-range luxury tier with a reputation for high-quality Swiss entry-level timepieces.
Period: Modern Tool Watch / Luxury Sport (2018–present)
Type
Dive Chronograph
Brand
Tissot (Swatch Group); Mid-range luxury tier with a reputation for high-quality Swiss entry-level timepieces.
Movement
Swiss Quartz, ETA G10.212 Powerdrive, 4 jewels, high-accuracy battery-powered movement with chronograph functionality.
Dimensions
Case Diameter: 45.5mm; Thickness: 12.8mm; Lug-to-Lug: 51.5mm; Lug Width: 22mm. This watch wears large on the wrist due to its substantial diameter.
Description
The Seastar 1000 Chronograph is a robust and bold diving instrument that merges the functionality of a professional diver with the precision of a chronograph. Its massive 45.5mm case provides immense legibility and presence, while the Milanese strap adds a touch of retro-vintage elegance to an otherwise modern tool watch.
Key Features
300m water resistance, screw-down pushers (rare at this price point), ceramic or high-grade aluminum bezel insert, and the ETA G10.212 'Powerdrive' movement for high-precision timing.
Dial Description
Matte black dial with three sub-dials (30-minute counter, 1/10th second counter, and small seconds). Large applied circular and rectangular indices with Super-LumiNova; sword-shaped hour and minute hands; date window at 4:30.
Case Material
316L Stainless Steel with a mix of high-polished and vertically brushed finishes.
Crystal Type
Scratch-resistant sapphire crystal with double-sided anti-reflective coating.
Bezel Details
Unidirectional rotating bezel with an aluminum insert; features a dive scale and a blue-to-black color gradient (on specific variants) or solid black with silver markings.
Crown & Pushers
Large screw-down crown with 'T' branding and protective guards; screw-down chronograph pushers to ensure water integrity.
Bracelet or Strap
Stainless steel Milanese mesh bracelet with a folding safety clasp. Also shown with an additional blue fabric/synthetic NATO-style strap.
Caseback Details
Solid screw-down stainless steel caseback featuring the engraved Seastar seahorse logo and technical specifications.
Movement Type
Swiss Quartz, ETA G10.212 Powerdrive, 4 jewels, high-accuracy battery-powered movement with chronograph functionality.
Water Resistance
30 bar (300 meters / 1000 feet); suitable for professional marine activity and skin diving, but not intended for deep saturation diving.
Origin & Provenance
Swiss Made; manufactured in Le Locle, Switzerland. Utilizes an in-house Swatch Group ETA movement.
Age Estimate
Circa 2019-2023. This design iteration was introduced in 2018.
Cultural Significance
Represents the 'democratization' of high-spec Swiss dive watches, offering professional-grade features typically found in watches costing three times as much.
Condition Notes
Appears to be in Excellent/Near-Mint condition. Includes original box, warranty card, and receipt. No visible scratches on the crystal or bezel in the provided imagery.
Value Estimate
MSRP approx. $550 - $625 USD. Secondary market value typically ranges between $350 - $450 USD depending on condition and accessories.
Care & Maintenance
Battery replacement recommended every 3-4 years; water resistance gaskets should be pressure-tested every 2 years if used for swimming. Rinse with fresh water after salt-water exposure.
Similar Watches
Certina DS Action Diver Chronograph (more expensive/ISO certified), Seiko Prospex 'Sumo' Chronograph (Automatic/Solar alternatives), Hamilton Khaki Navy Scuba.
Interesting Facts
The '1000' in the name refers to 1,000 feet of water resistance. Tissot was the first brand to create a non-magnetic watch and has been the official timekeeper for the NBA and Tour de France.