Specification: Diamond Lamp Sizer: 8 cm * 6.5 cm Whole Size: around 29.5 CM long, around 8 CM wide (As shown on the picture) approx Material:PC + ABS +Stainless steel tubes Battery :NI 1.2v -100 MaH AAA rechargeable batteries Light source: amorphous silicon solar panels. Lights last six to eight hours Switch ON/OFF photo sensitive automatically Ideal for patios, paths, borders, ponds and driveways Simple to install, no wiring or electrical knowledge required Auto sensor turns lamps on at night and off during daylightL ights are powered by rechargeable batteries which are already fitted