1. No Flicker: Please connect with DC12V LED Dimmable Driver. It may not be compatible with an electronic halogen transformer. It can be compatible with 90% dimmable halogen transformer. 2.No interference to radio equipment and other electronic devices, no noise pollution at work.Use high-quality EMI LED driver. 3. High CRI (Ra85): light close to natural light and the color of the object appears more natural. 4.Save electricity bill, 5W replace 50W halogen MR16 lamps, energy saving over 90%.Super high brightness 600LM. p> What transformer and dimmer are compatible with these bulbs? It is important to have stable 12V, otherwise the bulbs can't work. Dimmable DC12V LED Transformer: Using the 1AC12V Dimmable Dimmable Transformer Halogen Transformer: If you use 5pcs bulbs, the minimum power of the transformer must be 25W 2DC12 Dimmable LED Transformer: Usually the transformer has 10%-20% power loss. If you use 5pcs bulbs, the dimmable LED transformer is better 30W. 5W Dimmable MR16 LED Lamp,MR16 Spotlight,Natural White 4000K Replaces 50W,600LM RA85. Perfect Halogen ReplacementUsing the ordinary MR16 bi-pin socket. With the similar shape design, these MR16 LED bulbs are an ideal and long-lasting replacement for your mains voltage halogen bulbs. Safe for your familyIt contains no lead or mercury, no hazardous emissions, no UV or IR radiation, shockproof and vibration resistant. High color renderingThe color rendering index (CRI) is over 86, which makes your objects reflect colors really, naturally and vividly.