hearing aids for seniors rechargeable with noise cancelling,digital mini invisible hearing amplifier,inner-ear hearing aid,portable hearing devices for watching tv laopao <p>parameter:</p> <p> </p> <p>charging box current:≤200ma</p> <p> </p> <p>charging box input voltage:5v</p> <p> </p> <p>rated working voltage of hearing aid:3.7v</p> <p> </p> <p>hearing aid charging current:≤20ma</p> <p> </p> <p>hearing aid charging voltage:5v</p> <p> </p> <p></p> <p> </p> <p>accessories list:</p> <p> </p> <p>charging box: 1 pcs</p> <p> </p> <p>earplugs: large. medium. small 6 pcs</p> <p> </p> <p>charging line: 1 pcs</p> <p> </p> <p>qualfication certificate: 1 pcs</p> <p> </p> <p>warranty card: 1 pcs</p> <p> </p> <p>instruction: 1 pcs</p> <p> </p> <p></p> <p> </p> <p>note:</p> <p> </p> <p>1.users install and use according to the electromagnetic compatibility information provided by random files.</p> <p> </p> <p>2.portable and mobile rf communication equipment may affect the performance of in-ear hearing aids.</p> <p> </p> <p>3.avoid electromagnetic interference when using the hearing aid, such as near the mobile phone, microwave oven, etc</p>