700% brighter than required by StVZO (German road traffic regulations). IQ reflector with indirect light source: Maximum consistent illumination, double lighting area. Busch & Muller create amazing dynamo and battery lights to amazingly high standards. The Lumotec IQ Cyo Senso Plus features an indirect lightsource for maximum consistent illumination. The Senso system automatically activates the entire lighting system when the hub dynamo is in operation and the Plus system features a standlight with condenser.