... 220v 4.Watt: 10w 5, Guarteen: 3year 60cm SMD LED tube lihgt with Aluminum house Techinical Parameter:1.Size: ... length 600mm* tube diameter 30mm,2.LED: 144smd 35283.Input voltage: 110V, 220V, 277V,4. ... better in heat dissipation.2. Top quality 3528 SMD with big area for heat dissipation in the back ... better in heat dissipation.3. Only drive the LED current at 60%, this is better for the ...