Here is a detachable smart light for your helmet that helps you stay visible and safe on the road. Cosmo Connected has a smartphone app and shines red when you decelerate. In case of an accident, the device puts you in touch with an emergency call center and even forwards your GPS coordinates to get you help.
Cosmo Connected lets you manage your emergency contacts and update your medical profile in its app. It has multiple lighting modes (flashing, continuous) and lasts up to 8 hours on standby.[where to get it]