Knog Blinder 900

The Knog Blinder 900 is a light for people who actually ride off-road, and we have to be honest about that. With 900 lumens in a symmetric round beam, it's an excellent pick for mountain bikers riding evening singletrack in the Utrechtse Heuvelrug, Veluwe or Limburg forests — places with no street lighting where you want to see 10 metres ahead on a forest track. But — and this is a big but — this light is not StVZO approved. That means the beam has a round, symmetric spread with no horizontal cut-off, and it throws light straight into oncoming riders' and drivers' eyes. On Dutch public roads that's antisocial, and during a police check you could be warned that permanent bike lighting must meet approval standards.

For daily commuting on lit urban bike paths we therefore do not recommend this Knog — pick the Sigma Aura 80 or Trelock LS 660 above instead. Where the Blinder 900 does excel: sport and adventure. The 900-lumen mode lasts 1.5 hours, enough for an evening singletrack lap. The IP67 rating is the highest in this comparison, meaning fully dust and waterproof including immersion to 1 metre depth.

For Dutch mud and rain season (October to March) that's a serious plus. The integrated USB-A plug at the back is a clever move: you push the whole light directly into a laptop, power bank or wall adapter — no cable to lose. The CNC-machined aluminium body feels solid and the silicone strap mounts to the bars in ten seconds. Note: Knog themselves state the flash modes are not legal in the Netherlands or Germany for permanent lighting; use only steady modes on public roads.