At the top of each swing arm are two LED lights that you can turn the housing by a simple push of a button: to Press once, LED 1, press twice, 2. LED. Thus you can individually decide how many thus a total of 4 LED lights you want to switch from depending on requirements. The reading lamp thus provides a high degree of flexibility in terms of the intensity of the lighting and the like personally very, very much. The brightness when all 4 LEDs are on is very good, so I'm very happy with it.
After a charging time of about 3 hours this reading lamp provides hours of use without proper and adequate use of light. Of course also depends on how many of the LEDs has turned in the course of using.
The overall impression of the first days of intensive use of the reading lamp is thus really very positive. Power 5 stars from me.