In 1983, Seiko debuted the 7A28 as the world's first analog quartz chronograph watch.
 But it became best known as the watch that was worn by Sigourney Weaver as Ellen Ripley in the film Aliens.
Featuring a chunky panel sticking out on one side with two big chronograph buttons, it has that quasi-military futuristic look that director James Cameron was looking for when kitting out the cast of his 1986 sci-fi classic. 
This Seiko Giugiaro 7A28-7000 is probably the most famous of all Seiko Giugiaro watches because it appeared in this film.
Specifications:
SCED035
Battery-powered quartz
Caliber # 7T12
Silver Stainless steel case
Glass Material
15 seconds per month Accuracy
10 bar waterproo
5 years Battery life
Antimagnetic
42.2mm x 1.8mm × 10.8mm size
113g weight
Other Features The case back serial number 
24 hour hand
stopwatch function
Limited 3000 pcs. worldwide