UnaliWear recommends charging Kanega Watch batteries every 24 hours, but they can last up to 36 hours. The Kanega Watch is unique among medical alert smartwatches because it can be worn continuously. It comes with an extra pair of batteries that remain on the charger while the primary set powers the watch. At the end of the day, the user switches the batteries. Other medical alert smartwatches are charged at night, leaving the user potentially vulnerable to emergencies that happen in the middle of the night, such as falling on the way to the bathroom.