1. Material: ABS, electronic components 2. Function: hearing aids, intelligent noise reduction, waterproof, anti-drop 3. Frequency response range: 500Hz-3200Hz 4. Rated current consumption: less than 2mA 5. Output sound pressure level: 116-124db 6. Full sound gain: 33-43db 7. Built-in battery: 50mAh lithium battery 8. Working time: about 10 days 9. Ergonomically designed ear hooks, comfortable to wear, no ear pain 10. Rotatable design sound guide tube, can be worn on both left and right ears 11. The earplugs are available in four different sizes 12. Sweat-proof and drop-proof, durable 13. Intelligent noise reduction processing chip, double noise reduction, analysis and removal of various noises
