💌 It doesn't work with dimmer switches. This bulb is designed for ambient/decorative lighting, not suitable as a primary light source. Be sure to watch the flame effect video first. 【Dusk to Dawn Auto On/Off】 No switch, no app needed—this flame light bulb senses ambient light, turning off in daylight and on at night. Hands-free, energy-saving, and always ready when it gets dark. 【Upgraded Flame Effect】 Crafted with latest patented technology, our flame bulbs mimic the natural movement of real flames. Each flicker brings a warm, inviting glow that transforms any space with cozy charm. 【Extra 50% Lifespan & Eco-Friendly】 We're committed to sustainability, using recycled materials. Our fire light bulbs feature energy-efficient LED and better heat dissipation technology, ensuring durability while minimizing energy consumption. 【4 Flame Modes for Any Mood】 Choose from flickering mode, breathing mode, steady mode or built-in upside down flame, you can easily set the perfect vibe for any setting or moment. 【Flicker-Free & Surge-Protection】 Enjoy a soothing flame effect without the discomfort of flicker, thanks to our advanced flicker-free tech. Built-in surge protection ensures safety and durability, providing you with reliable, long-lasting performance. 【After-sale Service】 We stand behind the quality of our product and offer a 180-day return policy for your peace of mind. If you're unsatisfied with your purchase or encounter any quality issues within 180 days, we're dedicated to resolving it, ensuring a hassle-free shopping experience. 📏 Please Note Size & Fit – Each bulb measures 2.75 inches (diameter) × 5.3 inches (height) with a standard E26 base. Perfect for most lanterns, porch lights, and wall sconces. ⚠️ Not suitable for chandeliers (E12 base) or very narrow fixtures. Vicstone Dusk to Dawn LED Flame Light Bulbs Outdoor, 4 Modes Flickering Light Bulbs with Upside Down Effect, E26 Fire Bulb for Halloween Christmas Party Patio Porch Home Indoor Decorations - 2