L118 Wireless Noise Cancelling Headset & Charging Base | Headset | Wearing style Head-band | Office/Call center | Headset type Binaural | Colour Black | Volume control Button | Cable length 1.95 m | Adjustable headband Yes | Connectivity technology Wired | USB connectivity Yes | Bluetooth Yes | 5.2 | Ear coupling Supraaural | Headphone frequency 20 - 20000 Hz | Headphone sensitivity 115 dB | Weight 0.35 kg