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If you need a head torch that'll keep going for hours on end and can deliver a dazzling beam of light on demand, the BioLite HeadLamp 750 is an absolute must. Head to our Petzl Swift RL head torch review to find out more. Other design touches – a practical headband that wraps around the lamp section for easy storage, a switch lock that prevents the batteries from running down while in your rucksack – help this head lamp really shine. While you can't use standard batteries, Petzl will let you swap the included battery pack over, so you can keep a spare in your bag. There's also a 'reactive' setting, that'll automatically detect how much light you need and adjust accordingly, with the aim of not wasting battery power, although this can be annoying at times. You'll get 2 hours of 550 lumen light on the standard setting, which is pretty solid for a head torch. Realistically, you'll never need that kind of output, but it's nice to know it's there, isn't it? Petzl hasn't gone all-in on brightness and forgotten about performance, don't worry. The maximum output of 900 lumens is brighter than a sun through a telescope. If it's brightness you're after, this has you covered and then some. Our top best head torch pick right now is the outstanding Petzl Swift RL.