I have the set not buy here, but it can also highly recommend. both lights are without installing Werkzteug. The rear light also radiates laterally and not only backwards, so you will be very well seen. The front light is extremely bright, something I know of no genuine lamp / flashlight. on unlit street man can loose see 100m far. really hard. The charging function remains the front luminous reserved. Rechargeable batteries are included.