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Light & Motion Arc Li-Ion Ultra HID
Price: £450
Battery: Nickel Metal Hydride (sic)
Burn time: 6.5-8 hours
Weight: 668g
Halogen equivalent power: 50W
Contact: www.ultimatepursuits.co.uk
The ignition switch requires a double click to activate the light, which means it won't be accidentally activated in the bottom of a bag. The switch also controls the two stage brightness control, which dims the light only by a surprisingly small amount, although it extends the burn time by an extra hour and a half. The bracket is fiddly to fit using the extra rubber strips and it's quite bulky compared to others but it is very secure when in place. The head and battery are connected at the battery end, which reduces the chance of chance (sic) blackouts from unexpected tugs on the cable. The beam is very spot weighted with an even and diffuse halo making it great to see far down the trail but with little by way of flood for close to the front wheel vision.
Overall: An expensive but robust light with a good burn time but too 'spotty' in the beam.