1. This hearing aid is specially designed for the elderly or people with hearing problems, suitable for those people or patients with hearing loss. 2. Low power consumption, high fidelity, high-quality chip 3. With volume control function, the volume can be adjusted to meet your own needs and preferences. 4. Built-in battery power supply, smaller, simpler, more convenient, more powerful and more stable. 5. With digital circuit and automatic noise reduction technology, the sound is natural and brings you a comfortable experience. 6. Ergonomic earplug design, even if you wear it for a long time, you will not feel pain.
Parameter: 1. Maximum sound output: 122+/- 3dB 2. Sound gain: greater than or equal to 28dB+/- 2dB 3. Total harmonic distortion: less than or equal to 3% 4. Frequency range: 300-4800MHz 5. Input noise: less than or equal to 26dB 6. Voltage: DC 1.4V 7. Current: less than or equal to 1.2mA 8. Using A10 battery can be used for 5~7 days