Qcharx International Beat 1 USB-C Headphones

These Qcharx International headphones connect via a USB Type-C cable. They feature an electret condenser microphone with omnidirectional directivity and a signal-to-noise ratio greater than 55 dB. The speaker has an impedance of 32 Ω and a sensitivity of 105 dB at 1 kHz, with a frequency response of 20 Hz to 20 kHz.

The microphone operates in a frequency range of 100 to 10,000 Hz and has a maximum output impedance of 2.2 kΩ at 1 kHz. Its current consumption ranges between 150 and 500 µA, with a base operating voltage of 3 V. The nominal input of the speaker is 2.65 mW, while the maximum input reaches 3-8 mW. The sensitivity difference between channels is ±3 dB at 1 kHz.

• Connection via USB Type-C cable
• Omnidirectional electret condenser microphone
• Speaker impedance of 32 Ω
• Frequency response of 20 Hz to 20 kHz
• Microphone signal-to-noise ratio greater than 55 dB
• Speaker sensitivity of 105 dB at 1 kHz