Front light:
Well the simple installation on the handlebars through the clasp closure, which can be attached by snapping well and firmly on the handlebar and adapts to different diameters. However, can the base part, to which the actual light is attached, just as easily released again. But the set were 2 cable ties. One I use for the front light, because the base part has two eyelets through which one can well even wrap the cable ties around the handlebar and pull through. This is, after all, be ruled out that a Joker times quickly disconnects the base, even if I have the radiator itself withdrawn and plugged.
To replace the batteries, the front part of the lamp must be bravely turned around a quarter turn more or less, then it is possible the front part and pull the battery (included) Insert. The light is bright and strong, I hope the batteries should last the 20 hours specified.
Rear light:
Small, black and highly luminous. The base is attached by a rubber band to the seat post, there are 2 rubber settled in different sizes, so you can fix the light on thin and thick rods well. Since the base as the front light has 2 eyes, I backed up with the second cable tie the base of the seat post; So should the rubber (become brittle and / or) fails, so the light falls at least not from simple. In addition, the base is thus secured against 'take away' (but of course not against intentional theft).
It was interesting to install the batteries; the guide with the 4 little picture for me - and I count myself not to design and craftsmanship untalented Group - a challenge. Opening the rear light itself is illustrated by 1 'icon', which not revealed itself to me in a hurry. I saw a red pre-levied 'arc', which I thought was an eye, I need you to pull out somewhere to open the battery compartment. Long story short: it should be a coin. So take 10 cents (show-like and EUR 1), set between the two surveys and lever out courageously. For assembly simply replace the cap put squeeze us until everything clicks.