PMLN7851A

Motorola earpiece with push to talk functionality.  Also known as the EP900W.  

Compatible with: 

Motorola often changes the product SKU name. This product may have also been known as the PMLN7851, PMLN7851B, PMLN7851C, PMLN7851D, PMLN7851E, PMLN7851H, PMLN7851AR.