An important parameter that you need to pay attention to when choosing any lamp is the luminous flux. The physical meaning of this characteristic is to indicate the amount of light emitted, and it is measured in lumens. If this parameter is not specified anywhere, then while choosing a product from a famous manufacturer, the luminous flux can be approximately calculated taking into account the recalculation of 100 lumens per watt of power.
For example, the luminous flux of a 12 W LED lamp will be about 1200 lumens, which roughly corresponds to a 100 W incandescent lamp. In LED lamps with a matte bulb, the luminous flux indicator is less than the calculated one by about 20%.