Powered by ChiChinLighting, this LED gu10 works directly for AC 86 - 265v and is a perfect replacement of your halogen gu10 bulbs. Each pack contains 10 pieces of gu10 bulbs. This model you are looking at is a warm white model as we also carry day white model. Please make sure the bulbs you purchased are slik marked with our logo and also our logo boxes to make sure you receive legit ChiChinLighting products for reliability, lifespan and warranty. This model is also a patented design by ChiChinLighting. You might find that this model looks similar to others. But they are really different. If you had purchased from other suppliers, you would find that the size for their gu10 bulbs is longer than a halogen gu10 bulb so it will not fit with their light fixture. In order to solve this, ChiChinLighting has designed a new GU10 socket for this model so the size is perfectly the same as halogen gu10 bulb and will fit into all gu10 fixtures. If what you get is different from description or with ChiChinLighting Logo marked, please contact us to verify if you received fake products.