How long will it take to charge my Gen 2 Hybrid watch? The CZ Smart Gen 2 Hybrid watch battery can charge to at least 80% in one hour. Related articles How long does each battery mode last on my Gen1 Touchscreen Smartwatch? How do I maximize my battery life? I've placed the smartwatch onto the charger. Why don't I see the charging indicator on the display? Does my CZ Smart Gen 2 Hybrid smartwatch monitor my heart rate? How do I get the latest watch faces?