Quick and easy to use, simply charge battery and pop on head, press on button, 6 minutes later it beeps and turns off, remove from head. Cable is long enough to put control unit in trouser pocket. If you are sharing with someone else then leave for 10 - 20 mins between uses. As the version I have has the higher number of LEDs per cap fitting, I do noticed that it heats up while it is on my head, hence my recommendation of leaving to cool down before letting it be used again per instruction leaflet.. Does it work? Too early to tell. But as its only 6 mins, I’ll keep it on the dresser and keep using.
Fitting is loose on my head - so just mindful if looking down - and snug on my husbands head as I let him try it too!