Features:8W Surface Mounted Downlight1) LEDs Chip: SAMSUNG, SANAN or Epistar 2835 LED, 2) Driver: Inner or External Driver,3) Housing: 6063 Aluminum Housing and Heat-sink,4) Dimmable Options: Triac/ 0-10V/ DALI, 5) AC200-240V or AC100-277V Voltage, 6) 110-120 LM/W LED, 80 LM/W Whole Lamp,7) Exact CCT , 2700K, 3000K, 4000K, 5000K, 5700K, 6500K,8) High CRI>80 & CRI>90,9) 5 years warranty, 10) UL/TUV/SAA/CB/CE Certificate,11) Hanging or Ceiling Installation,12) IP44 Class,13) White or Black Finished.Specification      ModelLEDLumenPowerVoltage      （V）Beam AngleSize      （mm) QD-SF0803-530 LEDs SANAN 0.2W 2835350 lm5 W220-240V       100-277V120°Ø68*75mm QD-SF0804-742 LEDs SANAN 0.2W 2835490 lm7 W220-240V       100-277V120°Ø88*75mm QD-SF0805-848 LEDs SANAN 0.2W 2835560 lm8 W220-240V       100-277V120°Ø108*90mm QD-SF0806-1260 LEDs SANAN 0.2W 2835840 lm12 W220-240V       100-277V120°Ø128*105mm QD-SF0808-20108 LEDs SANAN 0.2W 28351600 lm20 W220-240V       100-277V120°Ø148*120mmApplication installationFAQ1.What maximum lumen per watt for your Surface Mounted downlight?We can meet 80-90LM per watt output.2.How do I know if I have 70mm or 90mm cut out?To identify if you have a 70mm or 90mm cut out,  you will need to measure the distance across the access of your ceiling hole.Alternatively as a general rule you can fit  your hand into 90mm hole, but you cannot fit your hand into a 70mm hole.