P/N: BT-500-M11-V2: Bluetooth Radio Adapter will pair with popular bluetooth listening device, or  L.E. Bluetooth Microphones(Mic/Earpiece). Pair adapter to cell phone type Bluetooth Earpiece for Undercover operations. Easily pair Bluetooth mic/headset/PTT only once. This adapter will remember the pairing even when all items are powered off.   For Motorola: XPR3300/XPR3300e, XPR3500/XPR3500e, DP3440, DP3441, DP3661, DP2000/e, DP2400/e, DP2600/e, TETRA MTP3100, MTP3200, MTP3250, MTP3250, MTP3500, MTP3550, XIR P6600, XIR P6608, XIR P6620, XIR P6628, MTP850, MTP3550, DEP550, DEP570, & More. PTT(Push To Talk Button) on Adapter FCC Certified Does Not Disable Emergency Button P25/Tetra/Digital Radio Compatible IMPRES Compatible Pulls Power From Radio-No Charging Required Easy/Simple Pairing Process Internal Memory Pair w/ Any Bluetooth Earpiece/Mic(Undercover) Wireless PTT Option *Bluetooth Radio Adapters Not Compatible With Motorola Bluetooth Speaker Mics* *The adapter should work with hearing aids that support the Bluetooth HSP (headset) profile.  It will NOT work with "streamer" style hearings aids that use the A2DP (streaming audio) profile.  Operators can contact the hearing aid manufacturer to find out which profiles are supported by the device in use.  Some streamer hearing aids offer an optional Phone Clip addon which will allow them to work with HSP devices. The prescribing audiologist can usually inform if such a device is available for the hearing aid.* Missing a Bluetooth Mic/Earpiece/Headset? Check Out Our Collection! 30 Day Fit & Function Money Back Guarantee. Purchase with Confidence. 12 Month 100% Free Replacement Warranty  We have the best/easiest exchange & return process. Purchase with confidence. If you have any questions we are standing by to help.