Digital Hearing Aid Tone Volume Adjustable Behind Ear

Features 1 Suitable for leisure and entertainment 2 Its a BTE hearing aid good for the hearing losing people 3 A good choice if you want to hear better of the world 4 Can help you hear clear and loud sound when you watch movies attend meetings or have classes Specification Material Circuit board and PlasticColor BlackBattery AG13 CR battery included Input noise 30dBVoltage DC 1 5VCurrent 4mAMax sound output 1305dBSound gain 50dBTotal harmonic wave distortion 5 Frequency range 300 4000HzSize L X W X H 7 X 4 X 2cm 2 76X1 57X0 79 appr Operation instruction 1 Put the earplug on the hearing aid you can select the appropriate size earplug better for fit in your ear2 Open the battery cartridge cover put int the battery in correct direction3 Put the hearing aid in your ear plug in the earplug tightly make sure the hearing aid is power off or volume adjuster is in the minimum position otherwise the instant sound will make you uncomfortable4 Adjust the hearing adi body to find a comfortable position5 Turn on the hearing aid and adjust the volume to get clear sound6 If you want to use the hearing aid with ear hook please put the ear hook to the earplug connection base left ear hook and righ ear hook for your selection7 If you hear the whistling sound please check if you plug in ghe earplug tightly8 If you stop using the hearing aid please take out the battery you save effectively energy Package Included 1 x Hearing Aid2 x Ear Hook3 x Earplug2 x CR Batt