Compact, collapsible design with built-in microphone Onboard microphone, volume and track search controls for enhanced Bluetooth control. Wireless range 10m, music playback time up to 10 hours Wide-range 40mm drivers deliver detailed, articulate sound Frequency response 60-20kHz 32 ohm impedance works well with low-output devices Rotating earcup provides hands-free, single-ear monitoring Plush padded leatherette earpieces ensure long-term comfort