Feature: Power:20W 30W 50W Voltage:AC110V / 220V (No need power supply ) Color Rendering Index:Ra80 Color Temperature: White 6000-6500K,Warm White 2800-3200K Beam angle :180 degree Lifespan:10,000hrs Housing material:Aluminum Do not need power supply,contact 220V/110V AC directly,Suiteable for DIY Applications: Widely used in Traffic lighting, Landscape lighting, advertising lighting, Indoor Lighting, Special lighting,Landscape scene / spot lighting,Architectural lighting,Display scene,Artwork lighting,general lighting,Amusement park scene,Aquarium lighting and so. Package Content: (According to what you choose) 1 pcs * Led Chip Lamp 10 pcs * Led Chip Lamp