Solar Amber Reflective Studs: Material: Tempered Glass: Power supply: Monocrystalline Solar Panel 2.5V/150MA for NI-MH; 5V/60MA for lithum battery; 3V/120MAH for super capacitor : Battery: NI-MH 1.2V/ 600mah(high temperature resistance); Lithum battery 3.2V/500MA Super capacitor2.3V/120F (made in Korea) LED: Ultra bright diameter 5mm( 6pcs) LED