1.competive price 2.energy effeciency 3.excellent brightness 4.long life time up to 10.000hours 5.meas:40x20.5x17 1.multi-power offered (15w,22w,32w,36w,40w,45w,55w,65w,85w,105w)2.voltage:110v-240v3.base:4-pin4.meas:40x20.5x175.qty:30pcs,50pcs6.optional color temperature (2700k/3300k,4100k,6500k)7.saving 80% energy ,compared to incandescent bulbs). 4u Suitable for DUL Energy saving lamp