Equipped with one wire for receiving transmissions and a second with a combined microphone, programmable button and push-to-talk. Securely wear this earpiece on either side of the ear with a soft rubber ear hook. Earbuds are removable. This 2-wire single earhook comes with 3 interchangeable earbud sizes that are optional to wear. The swivel earhook can be worn on left or right ear. It includes one wire for receiving communication and a second wire with a combined microphone, programmable button and push-to-talk (PTT). Motorola's state-of-the-art IMPRES technology allows communication between the radio and the audio accessory. The result is optimal audio performance, enhanced audio gain capability, and increased customization, assuring the highest quality communication. The speaker is wideband ready to provide better audio quality. The earpiece is UL certified.