The lamp comes from functional and in great design. The lamps are made of sturdy plastic. The holder of the front men is stable and unyielding. The support of the return of people served their purpose. Whether the anti-theft device, however, something good is I doubt it. Still, I wanted to pull off this no point. The advantage of the front light is the load capacity of the batteries, without having to remove or open the lamp. The rear light is battery-powered. At the end of the lamp does exactly that but what it should do. The cone of light is more than sufficient is the burn time in the displayed and beam mode considerably. The long-term test will tell if the light justifies the assessment. The only disadvantage of this also light - not approved for use on public roads as the primary light source, if not racing. Accordingly, you should consider whether you can not switching to a hub dynamo. This is now more than competitive in price and performance.