Socket: GX5.3 4x1Watt LEDs ALU housing Operating voltage 10-14V Power consumption: 4 W Lumem: not specified, as ambient lighting Kelvin amber/orange (estimated 100-1500 Kelvin) Beam angle 60° Dimmable: yes DxH: 50mm*60mm Can be used as Can be used as a replacement for conventional halogen mirror lamps. Attention: Please only use regulated or switching power supplies with the Synergy 21 LED GX5.3/MR16 spots. DO NOT use halogen transformers or wound power supplies, otherwise there is a risk of the LED being destroyed due to overvoltage. Please be sure to measure the voltage beforehand. We recommend the Synergy 21 Digital Multimeter DM830 to measure the voltage. Please note that the Synergy21 LED retrofit lamps may only be operated at an operating temperature between 0-50 C°. If there are deviations, the service life of the LEDs cannot be guaranteed!