RivenAn Outdoor Waterproof Solar Path Ice Cube Rocks LED Frosted Glass Brick Paver Light for Path Road Square Yard (Green) Powerful led, no wiring or batteries required. ON | OFF Switch is located on the bottom of the brick Built-in 300mAh NIMH rechargeable battery. Charge via sunlight during the day and light up at night. Each light measures: 7cm x 7cm x 5.2cm