The Siemens Tek is an advanced bluetooth remote that works with a large family of products (Siemens, Rexton, and Hansaton) that support bluetooth wireless communication. This device MUST be synchronized with your hearing aids prior to use (service not included). This service should be done by a hearing heath professional that supports your brand of hearing aids. This item comes with a Tek Transmitter which allows you to pair with any analog sound device with a SOUND OUT port such as a TV, CD player, etc. so you can hear your device WIRELESSLY through your hearing aids.