After switching it always lands in step 1. Each time you press the switch, the level increased by one. After 3 you end up again in. 1
This light intensity selection is convenient for one hand to extend the battery life, and on the other hand not to unnecessarily dazzling oncoming traffic or pedestrians, unless you really need the full light output.
A disadvantage of the 3 stages but results from the fact that there is no display of the selected light level. So if you - in order to preserve the battery charge - depending on stretch often times switches the light level, you always have to count that was the last stage and to remember these. This is especially true when using the lamp as daytime running lights, where you can see the brightness worse than darkness.
When you are no longer sure which stage is active, you can hold in your hand in front of it and the intensity estimate (distinction between level 2 and 3 all the more difficult) or one must briefly off and on again and then lands again at the lowest level. This proves everyday sometimes as annoying. A second display for the selected light level I would have felt to be useful, even if the lamp would have made a little more expensive.
The charging status is displayed via 5 green, top-mounted LED lights. There were reviews for Speedster as a single product, and therefore the sense the SOC LEDs to light something dazzling. Now, in absolute darkness I have rarely used, but in a typical local traffic at night with enough residual brightness of lights, houses, cars, etc. I feel the LEDs are not too bright.
The battery capacity is subjective for me well enough (reloading every 1 - 2 weeks in the winter daily use of 20-30 minutes at level 2).
The lamp feels very valuable. It is at just 150 g incl. The built-Li-Ion battery with relative ease. By comparison, the also highly recommended, much cheaper Sigma Lighster, although only 20 instead of 35 Lux makes, with approximately 170 g including the required there 4 AA batteries heavier than the Speedster..
For Sister lamp Lighster following should be included: both headlamps have the same bracket. Thus, when the battery of Speester times empty and one example from another wheel still has a Lighster, so you can always use them instead of the Speedster and vice versa. This gives - especially with a plurality of wheels or for families - great flexibility. You also need to buy only as many sigma lamps as you want maximum have wheels at the same time in use. For the remaining wheels a replacement bracket enough. My thanks to Sigma for this thoughtful and customer-friendly modular concept!
One more thing to chargeability:
The front lamp can be charged either via the USB port of a PC / laptop or via the included AC adapter with USB port on a 230V outlet. The supplied cable is 25 cm with good pure cable length (without connector ends) is very short which is difficult even at rather low-lying power outlets (if Bücherstapel etc. before the outlet drunterlegen). But you can use the extended USB cable to its smartphones, if one has one or reorder a longer USB cable. For tours the short cable, however, is convenient as a space-saving and very light.
The rear light Sigma Hiro I am also satisfied. Small, light, light. Only the battery type (size N) is slightly more expensive and I know for this format no batteries let alone matching chargers. The fastening with a rubber is not as stable as a screw fastening but still OK.
Overall, the set though has a pretty steep price, especially the Sigma Speedster Front lamp as the main component is in spite of the lack of light intensity display thoroughly recommended. The amount of the prize is also due to the built-in Li-ion battery and the charger supplied. I would buy the Speedster and the set again in the future.
