Sea-Gull Master Series Day-Date Open Heart Legend 39mm

  • USD190.00
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Sea-Gull Master Series men's wristwatch with a 39mm round 316L stainless steel case, an open-heart dial showing the movement, and day-date calendar displays. An automatic winding movement with 21,600 frequency, paired with a matching 316L stainless steel bracelet.

A synthetic sapphire crystal protects the dial, and the push-button hidden clasp keeps the bracelet's profile clean. The watch is rated to 5 bar for everyday protection.

Key Features

Brand Sea-Gull
Collection Master Series
Model Number M160S/M162S/M163S
Item Type Mechanical Wristwatch
Gender Men
Display Analog
Movement Automatic Winding
Movement (M160S) ST2502
Movement (M162S) ST2504
Movement (M163S) ST2505
Number of Jewels (M160S) 29
Number of Jewels (M162S) 33
Number of Jewels (M163S) 38
Movement Frequency 21600
Case Material 316L Stainless Steel
Case Shape Round
Case Diameter Approx. 39mm
Case Thickness Approx. 13mm
Lug-to-Lug Approx. 53.7mm
Crystal Material Synthetic Sapphire
Strap Material 316L Stainless Steel
Strap Length Approx. 21cm
Strap Width Approx. 20mm
Clasp Push Button Hidden Clasp
Water Resistance 5 Bar
Features Calendar, Open Heart
Warranty 1 Year
Net Weight 150g

Highlights

  • Open-heart dial that reveals the running movement
  • Day-date calendar display
  • Automatic winding movement with 21,600 frequency
  • 316L stainless steel case and bracelet with push-button hidden clasp
  • Synthetic sapphire crystal
  • 39mm round case with 5 bar water resistance

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Materials & care

Wipe the 316L stainless steel case and bracelet with a soft dry cloth. Avoid exposing the watch to chemicals, perfumes, or abrasive materials, and do not operate the crown or pushers while the watch is wet.

What's included

  • Sea-Gull Master Series mechanical wristwatch
  • Carton packing box

Frequently asked questions

What movement and jewel count does this watch use?

The M160S runs on an ST2502 movement with 29 jewels, the M162S on an ST2504 with 33 jewels, and the M163S on an ST2505 with 38 jewels. All versions beat at 21,600 frequency and wind automatically.

What are the dimensions of the case and bracelet?

The round case measures approximately 39mm in diameter and 13mm thick, with a lug-to-lug span of about 53.7mm. The bracelet is about 21cm long and 20mm wide.

What is the watch made of?

The case and bracelet are both crafted from 316L stainless steel, and the crystal is synthetic sapphire.

Is the watch water resistant and what warranty is included?

It is rated to 5 bar for everyday water resistance and comes with a 1-year warranty.