Seiko Silver Wave, Seiko SQ Quartz, Seiko SQ Sports 100 (Add your watch to the comments below…)
The Seiko caliber 8229 (aka 8229A) is a quartz movement with a quickset date and bilingual day of the week. This movement is found in vintage Seiko timepieces (circa 1980 onward) and is no longer being produced.
Official Seiko documentation states that the cal. 8229 has an accuracy rating of less than 15 seconds deviation per month in normal operating conditions and temperatures. Over the span of a year, the 8229 is capable of keeping time within less than 3 minutes.