Altec Lansing Bluetooth Wireless with Voice Confirmation Headphones, MZW300 Ergonomically designed for a pleasant music experience.Connectivity Technology: Wireless Built with Premium materials for long-lasting performance High-performance 40mm neodymium driver units deliver Deep bass sound Features onboard microphone and song navigation/telephony buttons Dual 3.5mm connectors allow you to listen to music or other Audio alongside a friend or relative