BH51M NEOBling Helmet BH51M Neo, Weight Approx.480g, Size, M:54-58cm L:55-61cm Apply:Bicycle, Bikes, Skateboard, Roller Skating, Hoverboard, E-bike, etc., Front LED Lights/Turn signalsSmart lighting integrates adaptive technology to ensure your visibility in dark conditions.Operate LED turn signals via handlebar remote control.The front warning lights work together with the 270° tail lights, to protect users´ security in all directions.Hands-Free OperationsAll LIVALL functions are designed to be used hands-free to ensure user safety remains the number one priority.With one-click answer phone calls using the remote control and enjoy clear sound both ways with the helmets in-built Bluetooth speakers and wind-proof microphone.Listen to GPS voice navigation via the built-in speaker with your connected smartphone.Easily communicate with your fellow cyclists using the Walkie-Talkie function when riding in a group.Fall Detection/SOS Message TechnologyIn the event of an accident, the emergency system will kick in, and send your GPS location to your emergency contact within 90 seconds whom you have configured in the LIVALL Riding App previously.Anti-Loss AlarmThe helmet will be turned off automatically when the helmet is disconnected with the phone and keep quiescence for 15 minutes.The helmet will automatically turn on when it moves.When the helmet is connected to the phone and the distance between the helmet and phone exceeds 15 metres, both the helmet and phone will alarm to remind users.LIVALL Riding AppDownload the free LIVALL RIDING APP in Appstore/Google Play store in order to connect and configure your LIVALL Smart helmet.