Driveway solar road studs LED raised pavement marker traffic Solar Cell (monocrystalline silicon )2.5V/120MA. 2.Power storage: NI-MH Battery 1.2V/800MAH. 3.Working Time: Under the normal light intensity,it can work 72h when it basked for 8h. 4.Aluminum alloy body with high resist compression is about 10-50 tons. 5 Display: φ5 bright anti-fog LED, color can be customized.