CABERG is one of the best Italian designers and developers of helmet 1 You can pair it with 10 helmets of the same type 2 Make/receive local and international calls 3 You can use WhatsApp, Viper etc for free calls to stay connected during ride with others riders. 4 you can listen to music from YouTube or other musical Apps 5 Auto reconnection with other Helmet at the end of phone call 6 volume control ( - ) ( + ) 7 size M 8 Convertible to Jet model 9 Low noise distortion during live communications 10 Air ventilation ( front and top ) 11 Anti-bacterial washable internal lining 12 Reinforced internal protective structures Note: A discount for a serious buyer & a present