Made of Philips 600C Heat Resistant Clay, 320C High Melting Point Solder, E14 (SES) Copper Lamp Holder and High Quality Hard Glass, the bulb has an average lifespan of 1000 hours but can last up to 1500 hours. Our salt lamp bulbs are 300C heat resistant bulbs specially designed as oven bulbs, microwave bulbs, range hood bulbs, refrigerator bulbs and Himalayan salt bulbs. This 15 watt bulb will work in all Himalayan salt lamps, it's perfect for 1 to 10kg salt lamps and it can last for months if left on all the time. This salt lamp replacement bulb is dimmable. This multipurpose light bulb can be used as an oven light bulb, microwave light bulb, range hood light bulb, salt lamp light bulb, and refrigerator light bulb. CE/RoHS certified. Help create a cozy and warm environment for loved ones with this incandescent small Edison spiral light bulb. Package contains 3 x 15W e14 bulbs