Excuse me if I'm wrong but the description of your front light says in the first sentence: "The AXA Nxt 60 is a dynamo front light [...] with a Steady light function allowing you to have 4 minutes of light when standing still. "
Is that not already what you want?
Excuse me if I'm wrong but the description of your front light says in the first sentence: "The AXA Nxt 60 is a dynamo front light [...] with a Steady light function allowing you to have 4 minutes of light when standing still. " Is that not already what you want?