Detailed Product Description · Material: ABS polyester · LED: 1 LED, brightness above 18,000MCD · Solar panel (non-crystal): 2V20mA · Battery: 1.2V, 40mA NI-MH · Charged in the sun for 3 hours, can keep on illuminating for 1.0 to 1.5 hours · Can be decorated with various key rings · Size: 6.0 x 3.0 x 1.0cm · Weight: 20g · Approvals: CE, RoHS and FCC