After the recent recommendation on here (thank you 1903!), I decided to treat myself to this chest light. It was despatched quickly and I have been out for a run in it tonight. I have to say, I am really impressed. Personally, I don't like wearing head lights (although I accept there may be times when I need to), so I had been looking at the Kalenji run light from Decathalon for a while. Easy to wear and incredibly light, you really do forget you are wearing it. It has three light settings for the front chest light as well as flashing red lights on the back! There is a small swaying motion on the light beam due to the natural rhythm of running but I soon forgot all about it. I used it on about a quarter of my 11k run at points when I was without street lighting or in very pooorly lit areas. I used the lowest light setting and this was sufficient to light my way! I imagine if you were to run on a trail at night you would need one of the higher settings but I have not been brave enough to try this yet!!😬 It charges via a USB - I use my iPad charger. All in all a great and very smart looking bit of kit! 😀 £29.99.