Product certification: 3C, FCC, ROHScolor, goldsize:30cm/11.8in*5cm/1.9in40cm/15.7in*5cm/1.9in50cm/19.7in*5cm/1.9inMaterial: hardware + acrylicVoltage: 110V-240VLight source: LED light (1W is approximately equal to 70-90lm)Light source area: 8-18㎡Dimming range: white lightPackage includes: LED ceiling light*1; product accessoriesNotice:1. Please confirm the color and size you need before placing an order.2. This product is a wiring type, not a socket type (please understand the purchase)3. We always maintain 100% confidence in our products. After placing the order, you will receive the product. If you have any questions about the product, please contact us through Amazon. We will give you a satisfactory answer within 24 hours.Finally, happy shopping!