-Self ballast down light -60%-80% energy saving -Lifespan 60,000-100,000 hours - ... >0.98,CRI>80Ra -CE,CCC,CB... Self Ballast Down Light Fittings D-70031. Technical data: Wattage: 23W, 40W, 50W Frequency: 140 ... effeciency ≥65-85Lm/W, save 20%-80% energy.(3) Low light falling: ≤5% in 2000 hours.(4) Low temperature: normal working ...