size L, 57-61 cm495gABS-plasticratchet closuregreyfront position lights, SOS function, indicators, brake light, headset, HIFI, walkie talkie functionProduct description360 ?? smart protection – perfect for all urbanists The award-winning multifunctional helmet LIVALL BH51 is getting an update that can be “seen”. With the BH51M Neo, LIVALL makes smart bicycle helmets little bit safer. The multifunctional talent is ideal as a companion for commuters and e-scooters, bicycle and e-bike riders. In addition to the great safety features, the helmet comes in an attractive design! Allfeatures at a glanceRear light Indicator Speaker Microphone Fall sensor Position lights at the front Rear light with brake light! Anti-loss alarm SOS function With remote control for the handlebar 360 ?? lighting system with day / night automatic The LED strip reaching to the ears and two position lights on the front of the helmet make you easily recognizable from all sides – ideal in city traffic. The ingenious day