No pollution, high efficiency, long life span, low brightness decline , good controllability, good shockresistance Power: 1WEfficiency: highRa: >80Lifespan: >100000hBrightness decline: lowWeight: lightControllability : goodShockresistance: goodPollution: noInstant start: quickMaintenance charges:noInstallation: no cableSafety performance : goodPower supply: solar cell