... ,noiseless; 4.Longlife. Mini 2U Energy Saving Lamp Features: 1.With excellent energy saving, 80% energy saving; 2.High luminous efficacy and less heat ... to guarantee the high light effect and improve the energy saving capacity. Application:House,hotel,office,garden,passage,mall,restaurant,etc ... unstable screw lampholders;Not suitable for dimming. Mini 2U Energy Saving Lamp with High power&efficiency