Digital Multi-mode Sound Amplifier Magnetic In-ear Rechargeable Hearing Aid Binaural Magnetic $ 28.97 Product information: Material: ABS+silicone Specification: black, white Health Products Product Name: In-ear Type IA102 IA102 parameters: OSPL90: 118dB+3dB Output sound pressure level (high frequency average value): 113dB4dB Full-range sound gain (Zui large gain): 35dB5dB Full range sound gain (average gain): 30dB5dB Equivalent input noise level: 29dB+3dB Frequency response range: 300Hz4500Hz Total harmonic distortion: 5% Environmental button battery: lithium battery Rated power supply current consumption: 5mA Size: Hearing aid size: 2x1.6x2cm Charging compartment size: 5.9x3.8x2.7cm The size of a box: 9x9x3.4cm Weight: Single net weight: 3.5g Net weight of charging compartment: 28g Net weight of the whole machine: 35g (2 hearing aids + 1 charging compartment) Gross weight per box: 95g Color: black, white. Packing list: Dual earphones1 Charging box1