1. Long working hours, suitable for all-day use by the elderly2. Intelligent noise reduction system, restores real sound 3. Mini appearance, small size, very invisible when worn 4. Small size, equipped with soft earplugs, can be worn for a long time without damaging the ears 5. Equipped with a charging compartment, power supply anytime, anywhere, easy to carry 1. Ultra-mini invisible USB charging station. 2. Left and right ears are not restricted. 3. Simple operation, one-button switch 4. There are 5 sound settings, suitable for moderate to severe hearing loss. 5. High-fidelity sound, intelligent noise reduction 6. Magnetic charging compact suitcase. What is a hearing aid: Refers to full-ear canal hearing aids, which are the smallest hearing aids on the market and are not easy to see even from the side. It can be inserted into the ear canal, reaching or exceeding the second physiological curvature of the external auditory canal, and is very close to the eardrum. Its reinforcement effect is closer to the physiological characteristics of the normal human ear. Maximum sound power: 110 dB Harmonic distortion: less than or equal to 15% Frequency range: 250-5500Hz Maximum sound gain: 30db5dB Input noise: less than or equal to 25dB Battery model: nickel rechargeable battery Working voltage: DC1.5V Working current: less than or equal to 4mA Color: black Material: ABS Package contents: 1*Charging cable 1 pair*hearing aids (left and right) 1*tuning stick Only the above packaging contents are included, no other products are included. Note: Light reflection and different monitors may cause the color of the items in the picture to be slightly different from the actual ones. The allowable measurement error is +/- 1-3 cm.