To Average lifespan in hours: 2000 Energy consumption in kWh / 1000h: 300 Lumens: 4650 Power in watts: 300 90 days manufacturer's warranty Instructions for purchasing the correct bulbs: Base, shape and dimensions Socket: R7 with double ended 0.38 inch diameter. Shape: T3 type J118. Diameter: 9.5 mm. p> Length: 118mm. Please make sure the double socket base of the light source with this your lamp A. Please check if the length of your lamp is 118 mm. Because there is a shorter version of 78 mm (3.13 inches) which can be seen in the photos. Please check these specifications before ordering. Luminous properties Power: 300 W. Luminous flux: 4650 lumens.< /p> Voltage: 220V, 230V, 240V AC. Beam angle: 360. Material: glass. Color Rendering Index (CRI): 100 for vibrant, enhanced colors. Instant On No mercury. Lifespan: 2000 hours (1.8 years with average use of 3 hours per day). CE and RoHS certified. Set of 4 pieces. Use of variators halogen These halogen lamps can be dimmed if equipped with a dimmer. Suitable for incandescent and halogen lamps All incandescent or lamps Halogens can be dimmed with conventional dimmers, because these dimmers simply adjust the voltage level for dimming. Dimming with LED dimmers only leads to incompatibility, as LED dimmers work very differently. Please check the compatibility of your dimmer or lighting before purchasing. about this itemAverage life in hours: 2000Power consumption in kWh/1000h: 300Lumens: 4650Wattage: 30090 days manufacturer's warrantyInstructions for purchasing the correct bulbs:Base, shape and dimensionsSocket: R7 with double ended 0. 38 inch diameter.Shape: T3 type J118.Diameter: 9.5mm.Length: 118mm.Please make sure the socket base doubles from the light source with this your lamp A. Please check if the length of your lamp is 118mm.Because there is a shorter version of 78mm(3.13inch) which can be seen in the photos.Please check these specifications before ordering.Luminous propertiesPower: 300W.Luminous flux : 4650 lumens. Voltage: 220 V, 230 V, 240 V AC. Beam angle: 360 . Material: glass. Color rendering index (CRI): 100 for vivid and enhanced colors. Instant On No mercury. Lifespan: 2000 hours (1.8 years with an average use of 3 hours per day). CE and RoHS certified. Set of 4 pieces. Use of halogen dimmers These halogen lamps can be dimmed if equipped with a dimmer. Suitable for incandescent and halogen lamps All incandescent or halogen lamps can be dimmed with conventional dimmers, because these dimmers simply adjust the voltage level for dimming. Dimming with LED dimmers only leads to incompatibility, because LED dimmers work very differently. Please check the compatibility of your dimmer or lighting before purchasing.