Photo: Tempus Shop
Catalogue / Tissot / ref. T120.852.11.051.00
Tissot Seastar 1000 GMT 40mm - Quartz
The Tissot Seastar 1000 GMT 40mm is a quartz watch, 40 mm across, with a sapphire crystal, water-resistant to 300 m. It was listed at €525 at Tempus at our check on 12 November 2026. Its price is in line with the 35 quartz Tissot watches in the catalogue (median: €495).
Where to buyChecked 12 November 2026
The button leads to today’s price. Affiliate link: the retailer pays us a commission, at no extra cost to you.
Who it suits
Anyone who swims, dives or wants a watch that never needs babying.
Strengths
Sapphire crystal · Water-resistant to 300 m
Limits
Quartz movement
Reading the spec sheet
What the spec sheet says
- Sapphire crystal. The most scratch-resistant option.
- Water-resistant to 300 m. Swimming and diving without a second thought.
- Quartz movement. At €525, other watches in the catalogue have an automatic movement.
Analysis based on the retailer’s spec sheet, without handling the watch.
- Brand
- Tissot
- Gender
- Men
- Case material
- 316L stainless steel
- Strap material
- 316L stainless steel
- Diameter
- 40.00 mm
- Crystal
- Sapphire
- Movement
- Quartz
- Thickness
- 12.00 mm
- Water resistance
- 300 m (30 bar)
- Functions
- Date, GMT
- Dial colour
- Black
- Clasp
- Folding clasp with push-buttons
- Lug width
- 20mm
- Weight
- 148g
- Reference
- T120.852.11.051.00
At this price
Alternatives from other brands
Same type of movement, within 20% of the price.
Questions
The short answers
Is the Tissot Seastar 1000 GMT 40mm an automatic watch?
No. It runs on a quartz movement.
Can you swim with the Tissot Seastar 1000 GMT 40mm?
Yes. It is water-resistant to 300 m, which covers swimming and diving.
Does the crystal of the Tissot Seastar 1000 GMT 40mm scratch?
It has a sapphire crystal, the most scratch-resistant kind.
What size is the Tissot Seastar 1000 GMT 40mm?
Its case measures 40 mm in diameter and 12 mm thick.
How much does the Tissot Seastar 1000 GMT 40mm cost?
It was listed at €525 at Tempus at our check on 12 November 2026.
Where it ranks
This watch appears in
- Quartz watches with sapphire crystal, water-resistant to 100 m, under €75047 references
- Quartz dive watches under €75029 references
- Quartz watches, water-resistant to 100 m, under €75067 references
- Quartz watches with sapphire crystal under €75088 references
- Watches with sapphire crystal, water-resistant to 100 m, under €750126 references
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