ITEM NAME:Digital Tone Voice Hearing Aids Behind The Ear Hearing Amplifier for Elder #SFD Product Description Description: Features: Exquisite luxuriant appearance. Strong noise reduction function. High cost performance. Specifications: Maximum sound output: 130 dB  ± 5 dB Sound gain: ≠¥ 50 dB Harmonic distortion: ≠¤ 5% Frequency response: 300Hz-4000Hz The equivalent input noise: ≠¤30dB Operating voltage: 1.5 V The working current: ≠¤4mA Weight: about 60 g with package Material: plastic Size: 45 X 45 X 10mm/1.77"X1.77" X0.39" Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the picture. Thank you! 2. Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement. 3. Very.Included: 1 X Hearing Amplifier Set with Box. Harmonic distortion: ≠¤ 5%. Strong noise reduction function. The equivalent input noise: ≠¤30dB. Exquisite luxuriant appearance. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the picture.
