... years warranty 4, lifespan: 50,000 hours 3*1W LED DriverSpecification Model No. HG-LC-3*1W Size 26X17X17mm Power ... 3*1W Forward Current 320mA Input Voltage AC90~270V Output Voltage 9.6~10.8V ... is -20~60degree Celsius, body temp. less than 538) LED life span: 30, 000Hours(Edison); 50, 000 Hours(Cree) ... for museums, art galleries, cosmetic counters, and more. 3W LED Driver