✔ Advanced 2835 SMD LED technology. ✔ Compatible with DC12V and 220V systems. ✔ Compact and easy-to-install G4 base design. Compatible withDC12V and 220V systems, these bulbs are suitable for a wide range of applications including chandeliers, ceiling lights, cabinet lighting, decorative fixtures, RVs, caravans, and more ????????✨.