RSP’s Asteri 3 front light features 200 Lumens of illuminative capability from its single 3 watt LED along with a burn time on full output of five hours or more (ours anyway) and a recharge time for its lithium-ion battery of around two and a half hours from empty. The beam stays tightly focussed but is sufficiently bright for back roads riding and there are high, low and flashing modes available through the on-off button. The charger supplied fits a standard three-pin socket.
Construction, reassuringly stated to be waterproof, is sturdy for the light itself but perhaps a little less so for the bracket that comes with it. Designed to be a quick fit to oversized handlebar centre bulges and to standard bars through the use of a rubber sleeve, the bracket is moulded from an oddly waxy and low-modulus plastic.
It grips the bar well enough, although fitment to an oversized example required the discarding of one of the two rubber gripper pads housed in the clamp band. But, thanks to a short thread, the thumbwheel on the screw would not readily pass over the fingers of the bracket without them bending, which they did easily.
An issue? Not really, but it could be and the plastic used does not feel to be particularly high-spec. That said, the light itself does and should last well thanks to the aluminium body. Weight is some 160g.
RSP Asteri 3 front light £80.99