1.Pure copper enameled wire is silver plated(2M).The excellent conductive medium makes the brightness of each lamp more uniform and the flexibility is easy to shape.

2.210MA CR2032 button battery(Included 2PCS).Sufficient power allows the string to continue to illuminate continuously for up to 72 hours, allowing the switch to work for more days.

3.An epoxy encapsulation process that achieves IP67 waterproof protection(20L).The string lights can be working 24 hours in the water,excluding the battery case.360° shines for better results.The LED light does not overheat and the touch is safe.

4.A small screwdriver can be used to replace the battery anytime. Hassle-Free Warranty - 18 months warranty and a life-time friendly customer service. it's waterproof(except the battery case).