3 Year Klein Electronics Manufacturer Warranty 3 Year Klein Electronics Manufacturer Warranty In-Line 1-Wire Design with Swivel Earpiece and Microphone Wear on Left or Right Ear Ideal for Hygiene Compatible with Kenwood NX-P500 Two Way Radios Klein Electronics Curl-K4 1-Wire Swivel Earpiece and Microphone. 1-Wire design allows users to clip the Push-To-Talk (PTT) button to either their uniform collar or lapel. Simply insert connector into walkie talkie, connect swivel clip to uniform lapel or collar, and place earphone on ear. Once connected to two-way radio, audio is redirected from two-way radio speaker to earpiece. Just press Push-To-Talk on microphone and begin communicating. Hear private two-way radio audio transmissions loud and clear through the high output earpiece speaker. High quality transducer allows for better audio clarity and volume. 1-Wire Surveillance Earphone can be worn on left or right ear. Kevlar reinforced cables and durable molded strain reliefs provide added strength when operating in the field. Be ready for any situation with the Klein Electronics Curl 1-Wire swivel earpiece and microphone headset. Ideal for security, hotels, casinos, police, law enforcement, construction, schools, events, and more.