Multipoint Connection: For total convenience, this Bluetooth headphone can be paired with two Bluetooth devices at the same time. Fast Pair: Easily find your missing headphones by sound or check their last known location in Googles Find My Device app on your smartphone. Customized for All Your Music Preferences: The EQ Custom feature on the Sony Headphones Connect App tailors sounds to your personal preference. Easy Hands Free-Calling: Conversation flows freely with easy hands-free calling, thanks to the built-in microphone. No need to even take your phone from your pocket. Designed to be Lightweight: Designed with comfort in mind, the WH-CH520 headphones are lightweight and feature soft earpads, additional head cushion, and silent joints so you can enjoy your favorite music and podcasts all day long.