5 Color Selectable: Experience versatile lighting options with the back switch that allows you to choose from color temperatures of 2700K, 3000K, 4000K, 5000K, and 6000K, perfectly matching your room's ambiance 15° to 60° Zoomable: Similar to a camera's zoom lens, our track light heads offer adjustable focus, enabling you to control the lighting area and create the ideal light spot 10% to 100% Dimmable: Our 12W LED track lighting heads emit a real output of 1,000 lumens (equivalent to a 70W halogen), and can smoothly dim from 10% to 100% using a TRIAC dimmer, allowing you to achieve the perfect lighting level H Type Track Lighting Rails Compatible: Designed specifically for 120V single circuit H-track lighting rails, our h track lighting heads are not compatible with L-track or J-track systems. Please ensure compatibility before purchasing Flicker-Free, Anti-Glare: With flicker-free performance and anti-glare properties, our led track light heads provide excellent color rendition(CRI 90+), protect your eyes, and accurately showcase the true colors of objects. Ideal for accent lighting in commercial settings, shop windows, homes, kitchens, and more 3 Years Service: Rest easy knowing that your TuyuBEE LED Track Lighting Heads are by a 3-year service. The solid aluminum body ensures excellent heat dissipation, extending the lifespan of the lights up to 40,000 hours. If you encounter any issues, simply contact us, and our responsive customer service team will assist you promptly TuyuBEE 5 Color Zoomable LED Track Lighting Heads H Type Track Light Heads Dimmable, White 12 Pack