| USB headphones (headphones for business use). |
| USB Type A and USB Type C. |
The structure requires a microphone. | The microphone needs to have a 250-degree swivel capability. |
| These earplugs are made of cotton and are designed to reduce ambient noise. |
| Lithium-polymer battery: 3.7V/400 mAh; charging time: 2 hours with a 5V/500mA charger. |
| Conversation starts: 12:00 PM.
Music starts: 3:00 PM. |
| Version 5.0; supports HFP, A2DP, and AVRCP; frequency range: 2.402-2.480 GHz; operating range: 20 meters. |
| 1 capacitive microphone (ECM) + 1 micro-electro-mechanical system (MEMS) microphone; signal-to-noise ratio (SNR) is 57 dB / 63 dBV/Pa; frequency response is 100Hz-10kHz / 20Hz-20kHz. |
| Noise cancellation using artificial intelligence, echo cancellation, and auto-mute when flipped over. |
| 32Ω/10mW, frequency response: 20Hz~20kHz, sensitivity: 110±3 dB at 1kHz, total harmonic distortion (THD): < 3%. |
| 169 x 178 x 68 mm (equivalent to 6.65 x 7.0 x 2.68 inches). |