Energy Saving: GU10 LED bulbs are equivalent to 50-watt incandescent bulbs, saving up to 90% energy and reducing most of your electricity bill. They have a 25,000-hour lifespan, eliminating the need to frequently replace bulbs. These bulbs are not dimmable, so please do not use them with a dimmer switch. Excellent Performance: 1. Standard GU10 base, easy installation by screwing the socket into place to replace ordinary chandelier bulbs. 2. Transparent glass and ceramic base materials, with rapid heat dissipation and exquisite workmanship, brighter and more stable. ③ Flicker-free, lead-free, mercury-free, and UV/IR-free, making it environmentally friendly. 【Bright Light】: The 4W GU10 LED bulb emits 450lm, 6500K with a 110-degree beam angle, perfectly replacing 50W halogen lamps and providing a bright and energetic atmosphere. CRI>85 ensures vivid visual enjoyment with original colors. It is used between 220-240V. 【Application】: Fits standard GU10 base, replaces ordinary GU10 halogen