Mini elderly hearing aid Wireless invisible hearing aid for the deaf Loudspeaker Easy to operate Volume adjustable

J20 is a non-programmable InstantfitCIC hearing aid and sound amplifier. Small, beautiful to wear and easy to carry. Based on integrated signal processing, J20 can provide you with comfortable hearing. Audiological Features. Low Equivalent Input Noise. Super Clear Sound. Low Frequency Cut Filter. Functional Features. Volume Control Mode: Rotated VC0~25Db. Colors available Red Bule. J20 is a non-programmable InstantfitCIC hearing aid and sound amplifier. Small, beautiful to wear and easy to carry. Based on integrated signal processing, J20 can provide you with comfortable hearing. Color Blue+Red. Material ABS+Silicone. Size 2cmx1.2cm. Net Weight 1.3g. Battery A10. Note: Adjust volume to the minimum before wearing. Choose an earplug of slightly bigger size to avoid whistler. Increase volume gradually to avoid sudden increase in sound. If you hear a howling, check the ear silica gel is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make