LED light bulbs for home, MR11 light bulbs led replacements, GZ4 standard base, Dimension:Φ35×35mm. Indoors use only, IP50. Using 12 PCS 5050 SMD high luminous flux LEDs, LED floodlight with 120 degree beam, Warm White 3000K~3500K, As 15~20 Watts replacements. 120 LM. DC 10V~30V or AC 10~18V wide rage voltage operation (constant current controller inside), Means that it can work on AC12V/DC12V Or DC 24V or any other voltage between 10V and 30V. 90% more efficient than xenon bulbs, incandescent bulbs and Halogen bulbs traditional lighting, Lifespan of up to 60,000 hours means that equates to 20 years lifetime if turn on lamp 8 hours a day. These bulbs are perfect for the inside case lighting for jewelry, no heat and good lighting.