MR16 GU10 based LED bulb is one of the most popular LED halogen replacement bulbs. Most of our GU10 LED bulbs can work with universal voltage ranged from AC85V to AC265V. Dimmable GU10 LED bulbs typically work separately for 110-120 volt or 220-240 volt systems. Retrofit GU10 LED Bulbs are available in cool white, warm white and neutral white colors. They are widely applied for household, design, commercial, and architectural lighting.