Return & Warranty:30-Day Free Return & Refund:*If you are not happy with our product at receiving, please contact Amazon Customer Service (within 30 days of receiving the product) to get a full-amount refund after you return the product to Amazon.Cautions: This is a non-dimmable bulb. Do not use it with any dimmer switches.2-Year Warranty:*This product has a 2-year manufacturer warranty against any manufacturing defects.*Please contact us from your Amazon Account at any time for a refund or product replacement.