Features: Suitable for 12v ac/dc Equal to 50w conventional mr16 Excellent cooling system Energy saving and environment-friendly Fully compatible with halogen mr16 Long lifetime up to 35000 hours No uv and ir radiation Harmless for paintings and antiques Specification: Model: ccb1-05-gu5.3-45 Base: gx5.3 (mr16) Power dissipation: 5w Input voltage: 12v ac/dc Body material: aluminum Luminous flux: cool white:390lm, warm white:310lm Color temperature: cool white:5000k-5650k, warm white:2700k-2850k Working temperature: -20¢fxc ~ +40¢fxc Avg. Life: 35, 000 hours Cri: cool white:75, warm white:80 Beam angle: 45 degree Dimension: diameter 49.5mm ¡Ñ height 51mm Weight: 42g