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1. Maximum sound output: 126+/-3dB 2. Sound gain: greater than or equal to 35dB+/-5dB 3. Total harmonic distortion: less than or equal to 3% 4. Frequency range: F1 less than or equal to 200Hz, F2 greater than or equal to 4500Hz 5. Input noise: less than or equal to 15dB+/-3dB 6. Voltage: DC 3.7V 7. Current: less than or equal to 1mA 8. Fully charged in about 2 hours, working for about 40 hours 9. Charging through the magnetic charging box, working time exceeds 100 hours 10. Digital DSP 16-channel professional system 11. The ear canal design is almost invisible and comfortable to wear 12. The charging status of the digital charging box is clearer
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Verified Compatible
Guaranteed fit for device in the title. Wrong part? Full refund including shipping.
