USB Rechargeable & Energy Saving: With a 2400mAh rechargeable battery, the motion sensor light indoor offers enhanced versatility. In Always-On mode, it can stay illuminated for 12 hours with the maximum brightness. In AUTO mode, it can last for 7-45 days.The motion sensor light utilize Grade A Lithium-Polymer batteries with high energy density and long cycle life. ( Charging: Red Light, Charged:Green Light )Please charge before first use
