Tissot Sideral Electronic (1970)
Ref. 40702 | Diameter 39mm
The Tissot Sideral
First brought out in 1969 and featured a fibreglass one piece case, accessible through the front of the case. The first automatic movements were the 21 jeweled Tissot 784-2. Later in the 70's these were replaced by the 24 jeweled Tissot 2481 movement.
The Sideral series were youthful and sporty models. The novelty and durability of the watch results from the ultramodern design of it's case.
The marketing department described the Sideral as super-resistant because of fiberglass resilience towards shock and extremes of temperature.