This hearing amplifier is designed for old people or people with hearing problems, suitable for those people who was hearing loss or patients. Low power consumption, high-fidelity material, fine quality chip, with stereo sound quality. Has volumes controling function, you can adjust the volumes to fit your own needs and preferences. Designed with recharging bag, large recharging capacity, the power level of the recharging compartment is visible. You can have a try. Features: Low power consumption, high-fidelity material, fine quality chip, with stereo sound quality. Soft silicone material, will not harm your ear, and also ensure stability and lasting. This affordable hearing device have volumes controls, you can adjust the volumes to fit your own needs and preferences. It also has a noise reduction feature that helps the user hear with maximum clarity. Ergonomic design earcanal simulator, will not feel pain even after long time wearing. Designed with recharging bag, large recharging capacity, the power level of the recharging compartment is visible. Easy carrying, more beautiful, easy to carry, and anti-lost. Specifications: Name: Hearing Device Model: BX-04 Color: black Type: 1pcs, 2pcs (optional) Battery(1pcs hearing device type, 2pcs hearing device type according to your selection): 1PCS hearing device: Recharing box: 1 * 1.2V, 600mah battery (included) Hearing amplifiers: 1 * 1.2V, 45mAhbattery (included) 2PCS hearing devices: Recharing box: 1 * 1.2V, 600mah battery (included) Hearing amplifiers: 2 * 1.2V, 45mAhbattery (included) Max sound output: 129±3dB Sound gain: ≥40±5dH Total harmonic-wave distortion: ≤10% Input noise: ≤32dB Frequency-range: 350Hz-4500Hz Voltage: DC1.2V Current: ≤2mA Package size: 150 * 80 * 42mm / 5.91 * 3.15 * 1.65in Package weight: 1pcs hearing device: 165g / 5.82ounce 2pcs hearing device: 185g / 6.26ounce Packing List(1pcs hearing device): 1 * Hearing Device 3 * Earplug 1 * Recharging Bag 1 * Cleaning Brush 1 * USB Cable 1 * Manual OR Packing List(2pcs hearing device): 2 * Hearing Device 6 * Earplug 1 * Recharging Bag 1 * Cleaning Brush 1 * USB Cable 1 * Manual