Well... The Silva turned up and for the price I'm happy.
I've not had a chance to do anything other than switch the lights off in the living room so far though LoL!
(from 1'st press of button>)
Red- single LED to the right of the cluster with a fairly wide beam.
Main Beam- Multiple LED's with a wide arc of light. Wide/bright enough for scanning a fair area (its no lighthouse, but impressive for size/weight)
Lower- Enough for walking/power saving.
Lowest- Enough to read or possibly whittle or cook.
Flashing White/Emergency/Strobe.
Flashing Red/Emergency/Strobe.
Single AA battery (provided) with a headband with a part rubberized band around the inside for head grip.
I don't think it weighs much more than the battery really!
al.