Specification: Output: 150W pure white daylight Voltage: 180V-240V Frequency: 50Hz Color temperature: 5500K Socket: E27 Size(Approx): 26.5L x 8.8W cm (10.6L x 3.3W inches) Weight (Approx):405g (with Package)/eachUsing tips: Please DO NOT touch the glass directly with your hand， use a clean cloth to install the bulb. Please always HOLD plastic part， NOT the glass part. Frequent turn on/off will reduce working life signicanlty.Package included: 1x Photo Studio Daylight Bulb