Headwave TG - Loudspeaker for helmets, Motorcycle helmet speaker, music for motorcyclists, your helmet as a concert hall No cables or interior installation means that it doesnt affect the fit of your existing helmet. The TAG mounts to back of nearly any helmet with paint safe adhesive good for 1-2 installations, 1 extra pad included. Additionally, the adhesive can be removed without any tools so that TAG can be transferred to a new helmet without leaving any residue. Pairs via Bluetooth with phones, communication and navigation devices. Dust and resistant, made in Germany