| 摘要 |
The pillow has two speaker earphones embedded inside, and uses spongy acrylic material. There is an external cover with a diameter of approximately 36.5 cm, and the internal material has a diameter of 33.5 cm. To listen to music from a radio cassette, the cassette is plugged into the wiring connected to the speakers, and the person's ear is then placed on the pillow. The loudspeaker impedance is approximately 32 ohms, with a frequency range of 20 Hz to 20,000 Hz.
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