The Klein Electronics Agent Y4 single-wire earpiece is a great choice for Vertex radios. It features a sturdy 'C' swivel earloop and a clear-audio speaker that sits comfortably on the ear. With an in-line PTT button and microphone, it's ideal for shift workers who need to share earpieces. You can use it on either the left or right ear. Compatible with a wide range of Vertex models including VX130, VX160, and many others.

Using this earpiece is easy. First, attach the earloop to your ear. You can choose to wear it on your left or right ear according to your preference. Then, connect the earpiece to your Vertex radio. The in - line PTT button allows you to easily transmit your voice. When using, keep the microphone close to your mouth for better audio quality. As for maintenance, clean the earpiece regularly with a soft, dry cloth. Avoid getting it wet as it may damage the internal components. If you need to share the earpiece with others, make sure to clean it between uses for hygiene reasons. Store it in a cool, dry place when not in use.