AD-135 3.5 mm Earphone Jack Adapter 3.5 mm earphone jack adapter for use with any of SP-27, SP-29 or SP-40 earphone.
The SP-27 features a clear acoustic tube that is designed to be hidden behind the ear making it hard to see. This makes it an ideal earphone for security, hotels, restaurants, retail and airports.
Earhook type earphone with 3.5 mm plug. For use with HM-222 or AD-135.
Earphone with 3.5 mm plug. For use with HM-222 or AD-135.