... lamp working longer time.4. Built-in power supply, precision constant current drive LED, and further improve the ... 8M16 * 16 mHeight 10M20 * 20 mEvenness degree>0.62800K-3300KColor temperature3800K-4500K6000K-7000KCRIWWRa>78PW,CWRa>85Light distribution ... offices, restaurants, hotels, malls, casinos, bars etc3. Display lighting for museums4. galleries, stores, malls, shopwindows5. exhibitions etc. ...