This is a Tissot Sideral S, a Diver's vintage automatic watch, fiberglass, Swiss made from the 70's, NOS. It's a casual wristwatch, very light (47 gr.) with a white rubber strap (very rare to find). The watch is in working conditions, charge on the wrist and has good precision for its age. Brand: Tissot Model: Sideral automatic Gender: Men Period: 1970-1979 Movement: Automatic, Tissot 784, 21 jewels, 18.000 A/h Case material: fiberglass Size: 41mm x 40mm (not measuring the crown) Type: Analogue wristwatch Shipped Insured: Yes Condition: Worn with signs of use Strap: Nato, fit up to 8 inch wrists Insured shipping is provided.