PERFECT ILLUMINATION: Fully dimmable, our C9 LED warm white bulbs are perfect for creating the atmosphere of your choice, whether for festive occasions or simple everyday ambiance. ENERGY EFFICIENT: With warm white C9 LED bulbs, discover the power of energy efficiency as each bulb consumes only 1 watts while outputting the equivalent of a 7-watt incandescent bulb--cutting energy consumption by over 85 percent! DURABLE: Our shatterproof plastic C9 LED bulbs are built for to stand the test of time, engineered to last up to 15,000 hours of use and withstand the most brutal of weather. VERSATILE: Our shatterproof LED U-shaped filament lights are spectacularly versatile. Suitable for both indoor and outdoor settings, they're designed to resist vibration, accidental impact, and to remain cool to the touch. PERFECT FIT: All our C9 LED bulbs have an E17 base, also known as "intermediate," and are designed to retrofit existing E17 socketed stringers. Upgrade your existing 120V incandescent string to LED with the ease of a simple 1 to 1 bulb swap. OVER 25 YEARS: Since 1999, Novelty Lights has been a trusted leader in the holiday lighting industry. As a US-based company, our customer service team is close to home and available on your schedule. We’re here every business day, dedicated to preserving the joy our products bring. Create the perfect ambiance for any season with Novelty Lights' Warm White C9 Flex Filament LED Replacement Bulbs. Whether you want bright and dazzling or low and intimate, our fully dimmable replacement bulbs are here to fit all your needs. These string light bulbs are not only visually appealing but also energy-efficient, using only 1 watts per bulb--a whopping 85% less than standard 7 watt incandescent bulbs. Treat yourself this holiday season with a noticeable reduction to your power bill by finally switching from outdated incandescent bulbs to modern LED. The resilience of our plastic, E17-base LED bulbs is truly remarkable. Boasting a 15,000-hour lifespan and a shatterproof shell, these intermediate base bulbs are designed to withstand weather conditions of all kinds. With virtually no heat output, they're also a great choice for safe and festive indoor decorations. These holiday replacement bulbs offer unmatched versatility, perfect for both indoor and outdoor use. Their weather and vibration resistant engineering make them safe to use in a variety of settings, from your living or bed rooms to your roofline or garden. Designed to retrofit existing 120V holiday and patio stringers, no special adapters or power sources are needed for our C9 flex-filament LED replacement bulbs. Simply thread them into any standard E17 socket to revitalize your old hardware with vibrant, long-lasting, energy efficient LED.