9 piece G4 LED, 1.4 watts now replace 9 pieces. Halogen 10 Watt. The power supply had to be replaced. For this purpose, the transformer 12V DC 0.5 Watt 15, installed also available from Amazon. The light color is 3000K warm white little colder than standard 2700K warm white, but not unpleasant. The small diameter and the small depth fitted the LEDs without problems in the bulb holder with lateral connection sockets. Additional on 04/24/2015: Unfortunately not in every bulb holder as there are some with diagonal (cross standing) pin terminals are fitted and are in consequence also the LEDs across the bulb holder! So Be careful when choosing! Otherwise, a BT Recommendation