The new BT2 main module is slightly larger to hold a longer lasting battery that, when fully charged, now lasts up to 10 hours. I no longer have to think too much about turning it off when I am in the studio all day. In addition, the new BT2 has a metal clip to attach it to your clothing--no more "clothes pin" style clip plus the cables to the two earphones come from one point rather than from each end of the old BT1's module.

But the biggest change is the much better sound these deliver! It matches today's high-resolution audio players that have wired earphones. The BT2 has a high-performance headphone amplifier with a low noise floor and low distortion but maintains an accurate frequency response.

The Shure RMCE-BT2 supports popular audio codecs including Qualcomm® aptX™ audio, aptX™ HD, aptX™ Low Latency, AAC, and SBC. No matter what device you're enjoying streaming music from, you'll be able to connect from now on and not face obsolescence.

There is the same in-line remote and mic control as the RMCE-BT1 and the RMCE-BT2 also has a wireless range of up to 30 feet. I leave my iPhone on the coffee table to have phone conversations or listen to streaming music any where in my living room. The battery last for up to 10 hours of playing time with up to 350 hours of standby time.

If you have not gotten into a Bluetooth earphone cable system for your phone, the RMCE-BT2 is the one to own now! Add a pair of Shure SE215 earphones ($99); they snap in using gold-plated MMCX connectors and know you'll have improved sound fidelity and advanced and modern Bluetooth 5.0 connectivity.