These lights are manufactured with a 2V 20mA amorphous silicon solar panel, one white LED bulb, stainless steel pole with spike end for easy insertion into the ground & manual on/off switch.They are easy to install with no wiring or electricity required & will work for 6-8 hours on a full charge of 8 hours sunshine approximately.It requires 1 x 1.2V 40mAh button battery which is supplied. Features: These lights are manufactured with a 2V 2mA amorphous silicon solar panel, one white LED bulb, stainless steel pole with spike end for easy insertion into the ground & manual on/off switch They are easy to install with no wiring or electricity required & will work for 6-8 hours on a full charge of 8 hours sunshine approximately It requires 1 x 1.2V 4mAh button battery which is supplied Dimensions: Width: 4.5cm Depth: 4.5cm Height: 31cm 2 Year Warranty - With a dedicated Customer Service Team committed to providing peace of mind from our door to yours Specifications: Dimensions: H:31.0 x W:4.