<https://www.talinfone.com/product/motorola-gp328plus-ex500-gp344-gl2000-radio-3-5mm-headset-audio-adapter/#product>
<http://schema.org/description>
"Motorola GP328Plus EX500 GP344 GL2000 Radio Earpiece Headset to 3.5mm Audio Adapter\r\n\r\nRadio Audio Adapter for Earpiece Headset PTT Mic Motorola GP328PLUS EX500 GP344 GL2000 Change to Visar 3.5mm Audio Adapter\r\n\r\nAudio Adpater for Motorola GP328plug radios\r\nThis adapter allows the use of any Motorola Visar 3.5mm Audio Adapter accessory to be used on Motorola radios listed below;\r\nPlug on and use, no driver/software is needed to use audio accessories.\r\n\r\nCompatible with below Motorola radios:\r\nGP344 GP388 GP644 GP688 GP328Plus GP329Plus GP338Plus GP628Plus GP638Plus GP344R GP366R GP388R GP644R GP666R GP688R EX500 EX560 EX560XLS EX600 EX600XLS PRO5150 Elite PRO7150 Elite PTX700 Plus PTX760 Plus GL2000\r\n\r\nNotice:\r\n\r\nIf your walkie-talkie type is not in the list above, please see my other items or email us your model number, thanks!"
<https://www.talinfone.com/product/motorola-gp328plus-ex500-gp344-gl2000-radio-3-5mm-headset-audio-adapter/>