Monacor Sonido Bluetooth Stereo Headset - closed back headphone system, frequency range headphones: 20 - 20000 Hz, impedance headphones: 32 Ohms, sensitivity headphones: 108 dB/mW, bluetooth version V5.0, 2,4 GHz, range up to 10 m, up to 15 h running time (standby 60 h), build-in mic, included 1,3 m Anschlusskabel (3,5-mm-Klinke/3,5-mm-Klinke) and 0,6 m Ladekabel (USB A/Micro-USB), weight: 240 g