I bought this light recently for travelling Fernleigh Track in the dark on my Road King bike. It’s a “Cree” type LED rated at 170 lumens (fwiw!), and has a slug-like proprietary Lithium-Ion rechargeable battery that pushes in the back and twists to lock or unlock. The suggested charging time is 5 hours and battery depletion is around 3/6.5/14 hours on high/med/low brightness settings. I won’t be using the 15hr. flash setting though, as I don’t like flicker on headlights. The light has a solidly made aluminium bezel and weighs around 130g., designed and assembled (?) in the US.
So far it has performed well on the track and city roads – I have used it mainly in the total dark for around 40kms., and another 20kms. of city streets and paths and find even the low setting quite adequate for me in good conditions. The higher settings are better for faster riding and rainy weather. It has a long bright throw and a fairly narrow beam, with not a lot of illumination to the sides, which is fine for the Fernleigh Track, rabbits aside !
The bezel has an effective little hood on top that prevents any stray light from dazzling the rider. The power button has a faint green locating glow that doubles as a charging indicator light and the LED light itself has a slight greenish hue to the white beam. The light also makes a good hand held torch when removed from its bracket.
The Cygolite 170 comes with an AC adapter charger and a USB charging cable. It’s not cheap but appears well designed and made.