§67 StVZO (1) Bicycles must for the operation of the headlight and tail light with an alternator with a rated output of at least 3 W and the rated voltage is 6 V or a battery with a rated voltage of 6 V (Battery continuous lighting) or a rechargeable energy storage as Energy armor. Notwithstanding paragraph 9 headlights and rear lights must not be switched on together.
After 2013 battery-powered taillights are now practically legally through legislative changes I was looking for just such a. Unfortunately, the rated voltage at 2 AAA batteries practically not more than 3.4 V are and there are 6V prescribed. This luminaire is not StVZO compliant and can not be recommended.