Specification parameters Transmission Protocol: 2.4G Private Protocol Transmission distance: ≥ 1 meter One to One: Support Earphone monitoring: Supports (compatible with Type-C interface headphones) Noise reduction: Supports three-level noise reduction Echoes: Support Sound delay: ≤ 2Da Microphone: -38dB ± 3dB omnidirectional capacitive microphone Frequency response: 20Hz -20KHz Sampling rate: 48KHz Signal to noise ratio: ≥ 70dB Working current: ≤ 15mA Shutdown current: ≤ 20uA Battery life: 6H (800mAh battery) Battery capacity: 50MAH/70MAH (2 lights, 4 lights) Charging compartment battery: 330mAh/3.80V/606mAh Charging compartment input voltage: 5V 1A Adapter: 5V/1A Electromagnetic contact of charging dock: supported; 88 Electromagnetic Sealing Control Working temperature: -10 ℃ -45 ℃

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