1.Model:SR-ASL04 2.solar panelMax power:18V 70W (mono-crystalline silicon) 3.Life time of solar panel:25 years 4.Battery Type:lithium battery 12.8V/30AH 5.battery Life time:5 years 6.LED Lamp:Max power 12V 50W 7.LED chip brand:Bridgelux from USA with high brightness 8.LED lamp lumen (LM):5000-5500lm 9.LED lamp life time:100000hours 10.LED lamp viewing Angle:120° 11.Charge Time:by sun,8 hours (in strong enough sunshine) 12.Discharge Time Full power mode:>15 hours 13.Discharge Time Saving power mode:>30 hours 14.Working Temperature:Range:-20 degrees ~+70 degrees 15.Colour Temperature Range(k):6000-6500k 16.Mounting Height Range (m)7-9m 17.Space Between Light Range (m):30-40m 18.Lamps Material:aluminium alloy 19.Certificate:CE/ROHS/IP65