https://makezine.com/article/technology/tiny-100mah-lipo-batterie/
Tiny 100mAh LiPo batteries, GPS wall clock controller and OLED light boards... - Make:
May 19, 2006 - Every week Spark Fun gets in really interesting electronics for projects and more - this week, the GPS controller for the 21 foot wall clock they had at
gps wall clock