Fight the darkness in hotel rooms

In hotel rooms, there is a principle lamps deficiency. Most rooms are dimly lit maximum - not suitable for reading, writing, drawing. Since I am traveling a lot and in the evening like drawing to relax, I searched desperately for a portable, bright, non-glare light source. The headlamp is perfect for me. It is small and light, feels comfortable and can be adjusted well. I can shed light on the drawing page before me perfectly without being blinded. The brightness is very good for me, not too bright, but very bright.
The lamp operates with conventional batteries or with a battery that can be charged via USB cable.