Máy Trợ Thính V-99 Bỏ Túi Chất Lượng Cao

Description: Increase volume gradually to avoid sudden increase in sound, adjust volume to the minimum before wearing. Choose an earplug of slightly bigger size to avoid whistler. 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 sure no air leakage. Need Battery: AG10 Button battery (Without Battery) Specification: Material: ABS Plastic+Silicone Size: 61x41x16mm Package Includes: 1Piece V-99 Hearing aid 4Piece Earplug (different sizes) 1Piece Carrying Bag 1Piece User manual