The red light is a bicycle rear light from Lupine and has unique functions. The brake light function, for example, activates by the position sensor in the red light always exactly when you really brake, and makes the rear light brighter for a moment. Safe and eye-catching red light or red light. Max. Red light or red light max. This question is easy to answer: when battery life becomes more important than the weight, the Red Light Max is the first choice. Convenient charging: Of course, the red light has a built-in lithium polymer battery and can be charged via micro USB socket. Installation is very easy and lightning fast on seat posts or similar pipes with a diameter of 26-45 mm using an adjustable robust EPDM rubber band. With an official K number, the red light can be used officially in normal road traffic. And of course also in the countryside. Thanks to the IP68 standard, it can be easily used even in harsh weather conditions. For a particularly secure attachment to the bike, we recommend the optional seat brace holder. Technical data: Cree XP-E2 LED power 0.1 W; delay light 0.4 W light output in ANSI lumens: 40 Li-polymer battery protection class IP65 / K09 approval K1478 charging port micro USB dimensions 30 x 32 x 60mm 60mm GweightNot 80 g. Box contents: Lupine red light MAX 2 rubber holders, 1 USB charging cable