The AXA Blueline 50 is a compact and sporty dynamo-powered headlight with a brightness of 50 Lux. Clear lens technology ensures visibility from the side. The light beam can be "seen" up to 70 meters and allows you to be "seen" from up to 4000 meters. Dual-axis steel mount. This version has been specifically developed for use with a 6-12V E-bike battery.