Passive hearing protection with radio Approved according to EN 352-1 (earmuffs) and EN 352-6 (earmuffs with communication devices)! SNR: 30 dB You can use the Hellberg Relax like headphones thanks to its built-in AM/FM radio and an AUX connection. But in addition to its radio function, this passive earmuff also offers high protection performance and excellent wearing comfort! This is ensured by soft cushions and infinitely variable size adjustment, so that you can adapt the hearing protection perfectly to your head shape and size. If necessary, the ear pads can be easily removed thanks to the intelligent snap-in system - and the controls are easy to use even with gloves! Easy radio control The included radio has an automatic control of the radio.