L Lohas Led Dusk To Dawn Led Light Bulbs, 40W Equivalent Led Outdoor, 4 Pack Product Details Auto on/off: With built-in light sensor, outdoor photocell light bulb will detect the light intensity, turns on automatically at night, detected the surrounding brightness, and turns off when ambient lighting is sufficient. Energy saving: 6W A19 dusk to dawn sensor led light bulb replaces a 40 watt incandescent light bulb. Save up to 85% on electricity bill. Good performance: Daylight(crystal) white 5000k, 500 lumens, automatic light bulb gives off a cozy and fresh illumination. Perfect for outdoor lighting. Easy to install: This 5000k E26 base led bright porch light bulb fits most light fixtures, and detecting light brightness is not affected by walls or light fixtures. Durable reliable: No lead or mercury. Having longer lifetime, making them virtually maintenance-free, reducing the hassle and costs of frequently changing bulbs. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.