The A120s functions pretty well. I encountered two drawbacks. Initial pairing with my Motorola S9 was not easy ... it finally worked by toggling the A120s into "manual mode". (Once paired, it reliably reconnects.) Second, I use a Creative Zen MP3 player with FM radio. The A120s interferes with the radio player unless you separate them by about 6 inches. I recommend the device, but thought some customers could benefit from the troubleshooting I went through.