• max bluetooth in-ear headset active noise cancelling • transparent mode • adaptive equalizer • spatial sound with dynamic head monitoring • sensors • optical sensor (on both sides of the headset) • position sensor (on both sides of the headset) • case detection sensor (on both sides of the headset) • accelerometer (on both sides of the headset) • slewing motion to adjust the gyroscope (left earphone) volume • press once to play, pause, or answer calls • press twice to skip to the next track • press three times to return to the previous track • Hold for siri • noise control button for switching between active noise cancellation and transparent mode size and weight: • 168.62 x 187.27 x 83.44 mm • 384.8 grams • battery: • Up to 20 hours listening time • with active noise cancelling/transparent mode and spatial sound on or single charge on voice call • Up to 1.5 hours of listening time with 5 minutes of charging connection: Bluetooth 5.0