FEATURES WIRELESS FREEDOM Break through the limitations of wired listening. Unplug your Solo2 Wireless, pair with your Bluetooth® device and move freely for up to 30 feet of wireless listening. Take hands-free calls with the built in mic, and use the on-ear controls to adjust your listening experience without reaching for your device. Stay unplugged all day thanks to the 12-hour rechargeable battery. The illuminated LED fuel gauge on the headphone lets you know when it’s time.