Wireless headphones offer comfortable use for many hours. The built-in ANC (Active Noise Cancellation) ensures excellent sound, whether you're sitting in a noisy office or exposed to noise while traveling. The detachable and flexible microphone arm allows optimal voice recording when used for online meetings, gaming and IP telephony. The built-in microphone allows you to speak discreetly in the headset even when the microphone arm is not connected. Built-in battery charges easily and universally via USB and gives you 13 hours of operation on a single charge. Wireless connection via Bluetooth Noise Suppression ANC + ENC Detachable flexible microphone with arm Comfortable headphones TECHNICAL SPECIFICATIONS Bluetooth chip: Realtek RTL8773 ANC chip: AMS3415 Speaker size: 40mm Impedance: 32 ohms Frequency response: 20Hz - 20kHz Sensibility. Capacity: 110dB +/- 3dB Built-in rechargeable Li-On battery: 300mAh Working time per charge: approx. 13 hours Charging time: 2 hours Charging input port: USB-C Wireless range: 10 m Microphone arm length: 14 cm + 3 cm plug Dimensions and weight: 21 x 17 x 7.5 cm / 211 g Package dimensions and weight: 25 x 19 x 12 cm / 3 cm 1.29 oz PACKAGE CONTENT Bluetooth Headphones Sandberg ANC FlexMic Charging Cable, USB-C (M) to USB-A (M) 30cm Flexible Microphone Arm with Mini-Jack User Manual