... high service ,high quanlity,OEM service compatible product :E27, E14,GU10 Features:1.LED Built-in Drive Power ... highest efficiency up to 85%6.Low height, adapting E27, E14,GU10 7.Open circuit protection, short circuit ... 2 years warranty The product specification:product specification : 3x1w 1*3W 1*1W LED bulb driver Input voltage ... 3.2-3.5VOutput current 320mAOutput power 3x1w Mr16 drive power