RRP: £45 Weight: 100g (including batteries) Headtorches have improved in leaps and bounds in the last few years and now come with an array of different light settings and features. I’ve been testing Black Diamond’s updated ReVolt on my weekly night runs, a couple of short night walks and an impromtu hill descent as darkness fell. Having been used to a basic Lenser headtorch with one light and two options for adjusting the brightness and field, I was a bit flummoxed by the options on the ReVolt. It features a main triple-power LED which comes on when you click the…