These LED light bulbs are widely used as down lighting or accent lighting in shops, offices and the home. The 4W spotlight bulb has a long lifespan, no hazardous materials.Save power more than ordinary bulbs. Low power consumption and long life-span LED spot light bulbs mean to help you save more money from utility cost. The standard GU10 fitting of LED spot light, easy to installation in household standard GU10 socket. The 110V spotlight bulb features up to 20,000 hours life-span plush 7000k color temperature are perfect for constant (24/7) use. LED bulb VS bulb (8hours / day over 1 year): --Power Consumption Comparison Electric consumption of LED 4W bulb: 4W ?? 8Hrs ?? 365=11.68Kwh; Electric consumption of 50W traditional bulb: 50W?? 8Hrs ?? 365=146Kwh Electric consumption ratio: 1150% --Life-span comparison: LED: approx ?? 20,000Hrs; traditional bulb: approx ?? 1500Hrs; --Comparison result: Our LED 4W GU10 bulb is far more energy saving than traditional bulb, which will save money on your electric bills. Applications: These products for replacement for conventional GU10 lamp, widely use in shopping mall, hotels, restaurant, cafes, office, museums, home indoor lighting, specialty stores, jewelry store, etc. Package includes : 10?? LED GU10 6000K Daylight spotlight. All the 10 LED bulb are shipped together in one package. Please make sure what VOLTAGE you need before place the order. If your fixture is 110 Voltage and you buy 12 Voltage bulbs, the bulbs will be burn.If your fixture is 12 Voltage and you buy 110 voltage bulbs, the bulbs will not light up. Many customers complaint the bulbs burn or not light up, most of the fact is they do not buy the right voltage bulbs. We offer both 110 Voltage and 12 Voltage bulbs for all types.