Comfortably wear the 1-Wire Single Earbud with the optional earhook for additional support. This earpiece comes with 3 different sized rubber sleeves to provide additional friction when worn. This 1-wire in-line PTT single earbud earpiece comes with an optional earhook for additional support. It can be worn with and without the soft and flexible earhook. This earpiece comes with 3 round rubber sleeve sizes to fit different ear sizes. It supports the loud audio feature enabled by the device. 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.