Wireless headphones for listening to music and telephony via Bluetooth V4.2 ,- Bluetooth 4.2 headphones for listening to music anywhere and/or telephoning without tangled cables ,- Alternative classic 3.5 mm cable headphone connection, for use in flight mode or when the battery is low for example ,- The control buttons support the remote function for music control with Play/Pause/Next track/Previous track and volume control ,- Integrated microphone for telephone calls or voice commands ,- Simple toggling between music and calls ,- Wearing comfort thanks to adjustable headband ,- 40 mm loudspeaker for excellent and powerful sound ,- Soft ear pads for long and pleasant wearing comfort ,- Earpads can be turned in: ideal for easy and compact transport ,- DJ headband function for single-sided use ,- Self-contained acoustics for excellent noise insulation ,- Battery life of 8 hours on medium volume, charging time around 2 hours ,- Supported Bluetooth protocols: HFP, HSP, A2DP, AVRCP for appropriate control management during telephony, audio data or audio streaming such as pick up/hang up, play/pause/next track/previous track (if supported by the telephone) ,- Also suitable for Internet telephony (VoIP, Skype)