====== Seiko 03 ======
Seiko's **Cal. 03** was the world's first [[quartz]] movement small enough for ladies watches. It was produced by [[Suwa Seikosha]] starting in [[1972]] but was only produced in small numbers for high-end watches.

===== History =====
[[Seiko]] was raced to develop a [[quartz watch]] movement in the 1960s, and delivered their first [[Seiko 35|Cal. 35]] movement to the [[Neuchatel Observatory]] in late [[1967]], just a few months after the [[CEH]] delivered their [[Beta 21|"Beta" quartz movement prototypes]]. A product of [[Suwa Seikosha]], Seiko offered Cal. 35 SQ for sale in the [[Seiko Astron]] watch on Christmas Day, [[1969]]. Suwa rival [[Daini Seikosha]] developed [[Cal. 36]] and launched it in [[1970]], but neither movement was truly produced in volume.

Suwa's second quartz movement was Cal. 03, which was a compact movement designed for high-end ladies and mens watches. Marketed as Cal. 03SQ, it was a simple time-only movement. No other version of this movement was produced, and it is said that as few as 90 examples were made before production stopped in [[1973]]. The watches using this movement were cased in 18K gold and sold for over JPY800,000 in 1972, limited to just a few retail outlets.


<WRAP ud ud_mov>

**Description:**
  * [[Quartz]] movement

**Functions:**
  * Hours, minutes, central seconds

**Data:**
  * ? [[jewels]]
  * ? Hz

**Production period:**
  * [[1972]]-[[1973]]
  * Successor [[Seiko 41]]
</WRAP>

{{tag>Movements Quartz_movements Seiko_calibres Seiko_quartz_calibres}}