LED ceiling/down bulb/lamp light more than 50,000hrs' lifespan different power&color 2 years ... recycling4, DC drive, no stroboscopic,protect eyesight 5, High light efficiency,low heat,90% of the electric energy can be ... turned into light.6,High safety coefficient for small voltage, current, do ... , museum, office, reading room such indoor lighting; Disco, bars, card!