Obvious advantage: 1.Energy saving up to 70% than normal fluorescent lamp. 2.Environmental-friendly.No mercury,no UV or RF interference, and other hazardous materials,fully RoHS-compliant. 3.Special circuit design,each LED works separately. It doesn't affect other LED's work if one fails. 4.UL,CE(TUV),ROHS,FCC certificated. 5.Item: 0.6m,9w/1.2m,18w/1.5m,24w/1.8m,28w/2.4m,40w,etc 6.50,000 hours life span.