40mm drivers for clear Bluetooth wireless Audio + walkie-talkie for any Audio compatible helmet</br>Dot walkie-talkie app provides push-to-talk communication with your Crew with limitless range</br>Two-button glove-friendly controls adjust volume?? change tracks?? play?? pause?? take calls and use Siri (voice control) through the built-in microphone</br>10 hours of playtime on a single charge so you can ride all day listening to smooth Jazz without Concern</br>Sweat-res