18WLEDdrive power,9-12pieces2Whigh power LEDdriver Maximum power: 18W Inputvoltage range:100-240V Outputvoltage range:18-24V StandardOutput current: 420MA Maximumconversionefficiency:87% Maximum powerfactor:0.99 Dimensions: 75 × 29 × 21MM Put inthe lamp holderE27,can drive9-12pieces2Whigh power LED