For Sonim XP5, XP5plus, XP5s, XP8, & XP10 Acoustic Tube 1 Wire: In-line PTT with a microphone. Features industry-leading 30lb pull strength at both ends of the PTT. Includes a quick disconnect clip that secures the earpiece and provides additional cable strain relief. Offers twist-off acoustic tubes for hygienic and easy swapping between multiple users sharing the equipment. Each kit comes with two ear tips, one clear and one skin-colored. Optional earpieces are available. Comes with an adapter for Sonim XP5, XP5plus, XP5s, XP8, & XP10 phones. It does not disable the emergency button and is P25/Digital Radio Compatible*. No programming is required, and there's no additional app to download.