(10-Pack, Warm White) Sunthin 5w Mr16 Led Bulbs, 50w Equivalent, Recessed Lighting, MR16 LED, LED spotlight, 360lm, 45&deg; 10 pack Warm White 5W MR16 LED bulbs Save electricity bill. Replace 50W halogen bulb by 5W LED, save 90% on electricity bill of lighting Easy Installation. Standard MR16 shape with MR16 base. Can be easily fitted instead of ordinary MR16 halogen bulbs Proprietary Optics Lens enabling glare-free uniform lighting for all working environments Reduce re-lamp frequency. Lifespan is over 30,000 hrs. Save effort and maintenance costs on changing bulbs frequently 1) COB, (Chips on Board) multi LED chips are packaged together as one lighting module. COB LEDs have great advantage of thermal resistance, larger cooling area, better lighting effect and high light efficacy. An LED that has been exposed to high heat or thermal stress will typically lose efficiency which diminishes its brightness. SUNTHIN LED bulbs are equipped with high-performance aluminum heat sinks capable of removing thermal stress. It offers 360lm output and is perfect for work areas where a brighter light is needed. It is a great replacement for 50w Halogen GU10 spotlight, but uses only 5w of power to run. The powerful light output and precise 45 degree beam angle make it perfect for all manor of uses in the home, including lighting rooms that have slightly taller ceilings than most. High CRI (Color Rendering Index) means that the LED is emitting more of the color spectrum than typical LEDs do, Your typical bright-blue tint LED drops red, orange and aqua wavelengths, but modern hi CRI emitters do a better job of outputting the entire spectrum.