Product Specifications:

1. Model: K5500

2. Type: Earphone

3. Brand: EDIFIER

4. Features: Eartoreturn technology for vocal exams, built-in microphone with noise reduction for hearing protection

5. Design: DSP Sound Card for comfortable fit, specifically developed for vocal or arts exams

6. Functionality: Supports real-time monitoring for vocal practice, ideal for exam preparation and home practice

7. Special Features: Built-in ear return function for pitch correction, customized microphone for clear high notes without distortion

8. Noise Reduction: Integrated noise-canceling microphone for clear recordings in any environment

9. Adjustability: Adjustable microphone positioning for optimal sound capture, maximum sound pressure protection for hearing safety

10. Technology: DSP digital signal processing system for immersive sound experience, SSR interference-resistant braided cable for pure sound quality

11. Connectivity: USB interface for plug-and-play convenience, adjustable headband for comfortable wear

12. Design Details: LED status indicator for easy monitoring, green fluorescent marker for microphone direction

13. Specifications: Cable Length: 2.0m ± 6cm, Speaker Impedance: 32Ω, Microphone Sensitivity: -45dB ± 3dB, Frequency Response: 20Hz-20KHz, Connector: USB-A, Signal-to-Noise Ratio: ≥87dBA, Output Sound Pressure Level: 96 ± 3dB SPL(A)