Solar Charging Approx. 6 months on full charge Average monthly difference ±15 seconds Overcharge protection Description: Seiko Kia introduces a new compact solar-powered watch. This model is attractive for its small size (case diameter 23 mm), which can be used like an accessory, and its simple appearance with a reduced number of functions. The sharply shaped case and strap reflect the light, giving the watch a strong presence despite its small size. The dial has a newly developed sheer finish with depth and a subtle pattern that can be enjoyed casually. In addition to the "Lukia regular model's first all-black design," the lineup includes the standard all-silver and pink gold two-tone.