Hearing Aids,Rechargeable Digital Hearing Amplifier for Seniors and Adults, Ear Hearing Aist Device with Volume Control What degree of hearing lo is suitable for this hearing aid? This model is suitable for mild to moderate hearing lo. Bluetooth Connection ModeThe hearing amplifier aids supports Bluetooth connection, long pre the hearing aid M button for about 3 seconds, connect to the mobile phone or TV, you can enjoy music or answer the phone. Dual Noise ReductionThe newly upgraded smart chip, the noise reduction ratio is increased by 30%. Pair it with earplugs of different sizes to further reduce howling, which sounds more natural and provides you with excellent sound quality and a comfortable listening experience. Suitable for all kinds of people with poor hearing, the angle of the earplugs can be adjusted, suitable for both left and right ears. Convenient and comfortableThe hearing aid is small and convenient, and does not affect wearing glaes. The ergonomic design fits the auricle perfectly and is not easy to fall off. Use air ducts to make the sound more delicate. Humanized design, the hearing aid can be worn on both left and right ears, skin-friendly silicone earplugs, no discomfort when worn for a long time. USB Cycle ChargingThe hearing aid can be fully charged in 3 to 4 hours,Up to 60 hours of use,you don"t need to change batteries frequently.When charging,turn the switch to O gear,Steady Green Light = Charing,Green light off = Charing Is Complete. Note: Products with electrical plugs are designed for use in the US or EU. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.