In-Ear Adjustable Volume Hearing-aid - Silver + Black (1 x LR41)
Brand N/A Model N/A Color Silver + black Material Plastic Quantity 1 Power 1 x LR41 battery (included) Functions Help people with hearing difficulty Wearing Mode In-ear Maximum loudness 130 +/- 5 dB Sensitivity >/= 50 dB Frequency response 300~4000 Hz Noise Packing List 1 x Hearing-aid 3 x Ear buds 3 x Batteries 1 x English manual