1963 Pilot Watch Sea-Gull ST1901 Movement Mechanical Chronograph 40mm Case

Description

SEAGULL 1963 HAND WIND MECHANICAL CHRONOGRAPH WITH SAPPHIRE CRYSTAL
FIRST CHINESE AIR FORCE CHRONOGRAPH (PROJECT D304)
This special edition watch is an official remake of the 1963 Chinese Air force chronograph, a unique and classic masterpiece now coveted by collectors nearly as much as the original. This new updated version has a 40mm polished stainless steel case with a sapphire crystal (front) and an exhibition case back. The gold tint creme dial features goldtone numbers and markers and a red star under the 12:00 position. The movement is a Seagull No. ST21 mechanical (hand winding) chronograph with 21,600 VPH and shock protection. Power reserve is about 45 hours on a full wind without the chronograph running.
The Seagull chronograph uses a column wheel. In this design, the key component is a small rotating cylinder with teeth at the top, not unlike a castle turret. As the chronograph buttons are pressed, the column wheel rotates and levers fall in between the teeth to drive the functions. The column wheel movement is considered by most watch enthusiasts to be the most desirable, since it requires the greatest skill to design and build correctly and it is thought to be the most durable.
The sub-dial on the left is the running seconds counter and the sub-dial on the right is a 30-minute timer. The red seconds hand is activated when you click the pusher at 2:00. The outer portion of the black dial is marked in seconds. The watch comes with a olive green NATO-Style strap.
Watch Features:
Movement: Sea-Gull ST1901 Hand Wind Mechanical Chronograph
Case: Polished Stainless Steel, 40mm diameter x 13mm thick
Back: Exhibition window back
Crystal: Scratch resistant sapphire
Band: Olive green NATO style strap, buckle closure.
Water Resistant: 30 meters
Warranty: 1 Year