product-description Product1. Long working hours, suitable for the elderly to use throughout the day 2. Intelligent noise reduction system to restore real sounds 3. Mini appearance, small size, very invisible when worn 4. Compact and , equipped with soft earplugs, which can be worn for a long time without damaging the ears 5. Equipped with a charging compartment, it can provide power anytime and anywhere and is easy to carry 1. Super mini style, invisible USB charging stand. 2. There is no restriction on left and right ears. 3. Simple operation, one-button switch 4. There are 5 sound adjustments, suitable for moderate to severe hearing loss. 5. High-fidelity sound, intelligent noise reduction 6. Magnetic charging, compact carrying bag. What is a hearing aid: refers to a complete canal hearing aid, which is the smallest hearing aid currently available and is not easy to spot even from the side. It can be placed into the ear canal, reaching or exceeding the second physiological curvature of the external auditory canal, and is very close to the eardrum, and its amplification effect Characteristics are closer to the physiological characteristics of normal human ears Maximum sound output:110 dB Harmonic distortion:less than equal 15 percent Frequency range:250-5500Hz Maximum sound gain:30db5dB Input noise:less than equal 25dB Battery model:Ni- rechargeable battery Working voltage:dc1.5V Working current:less than equal 4mA Colour:Black Material:ABS Package Contents: 1 x charging cable 1 pair x hearing aids (left and right) 1 x tuning stick Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.