Crafted from 316L stainless steel with a synthetic sapphire crystal, this 41mm mechanical wristwatch features a manual-winding ST8004 movement with 23 jewels and a tourbillon complication. The round case houses a complete calendar display, while the leather strap with pin buckle ensures a comfortable fit. Water-resistant to 5 bar, this timepiece combines precision engineering with classic design.
Key Features
Brand
Sea-Gull
Series
Heritage Series
Model Number
818.11.8821/518.11.8821
Item Type
Mechanical Wristwatch
Movement
ST8004
Winding Mode
Manual Winding
Number of Jewels
23
Movement Frequency
21600 bph
Case Material
316L Stainless Steel
Crystal Material
Synthetic Sapphire
Case Shape
Round
Case Diameter
Approx. 41mm
Case Thickness
Approx. 10.5mm
Strap Material
Leather
Strap Width
Approx. 21mm
Strap Length
Approx. 19cm
Clasp
Pin Buckle
Water Resistance
5 Bar (50m)
Features
Tourbillon, Calendar
Net Weight
71g (2.5 oz)
Warranty
3 Years
Materials & care
To maintain the watch, avoid exposure to strong magnetic fields and extreme temperatures. Clean the case and sapphire crystal with a soft, lint-free cloth. The leather strap should be kept dry and away from prolonged moisture. Service the movement every 3-5 years by a qualified watchmaker.
What's included
Sea-Gull Heritage Series Tourbillon Calendar Watch
Carton packing box
Warranty card (3 years)
Frequently asked questions
What movement does this watch use?
It uses the Sea-Gull ST8004 manual-winding movement with 23 jewels and a frequency of 21,600 bph.
What is the case diameter?
The case diameter is approximately 41mm.
Is the watch water resistant?
Yes, it is water resistant to 5 bar (50 meters).
What is the strap material?
The strap is made of leather with a pin buckle clasp.
