Painless to wear, ergonomic shape makes wearing more comfortable Magnet adsorption charging, convenient and quick charging The product adopts dynamic speaker, the sound quality is clear and more pleasant. There are 5 levels of sound adjustment, suitable for people with different hearing loss Imported chip, intelligent noise reduction, reduces background noise, uses dynamic iron speaker, hears more clearly The hearing aids can be used continuously for about 30 hours when fully charged, the charging box can charge 4-5 times for dual hearing aids Convenient to carry, the product's charging box is also a portable box, which can be carried around and charged at any time Fingerprint intelligent touch control, simple and convenient, full of technology Delay 10 seconds to turn on the hearing aid after removing it, avoiding the troubles brought about during the wearing process (No need to turn on the hearing aid manually, 10 seconds later to turn on the hearing aid automatically) Specification: Hearing aid use time: 30 hours Hearing aid charging time: 2.5-3.5 hours Charging time for the charging compartment: 2-3 hours Charging bin available for hearing aid charging times: 4-5 times Battery type: Lithium polymer battery Single hearing aid battery capacity: 45mAh Rechargeable bin battery capacity: 300mAh Maximum saturation OSPL90 (dB): ≤120±3dB High-frequency average OSPL90 (dB): 110±4dB Full-range sound gain (high-frequency average): 30±5dB Frequency response range: not narrower than 320Hz-4500Hz Total harmonic distortion: ≤10% Equivalent input noise level: ≤ 30dB Rated power supply current consumption: ≤1.5mA Rated voltage: 3.7V Certification: CE, ROHS, FCC