Made of ABS Plastic. Holds a solar charge over 3 years. Super bright LED - 280 lumens. Water resistant and floats. Extremely durable. Environmentally friendly. Full charge = 6 hours of '' On''. Back up batteries included. Recharge with sun, artificial light, AC or 12V Adaptor. 5.75 in. L x 5.75 in. W x 9 in. H (1.7 in.).