This hearing device is designed for old people or people with hearing problems. Easy-to-wear design, conform to your ear shape, stable wearing and can ensures the comfort. Soft silica-gel material, does not harm to your ear, and also ensure wearing stability and lasting. You can have a try. Features: This hearing device is designed for old people or people with hearing problems. Its clearly sound quality and big power can be used for compensation of the hearing loss. Full digital circuitry, low power consumption, adaptive noise reduction, adaptive feedback cancellation. Easily button control, easy to power on/off and adjust the volumes, user friendly and convenient. Two modes adjustable, you can choose N mode and H mode according to your demands. N mode: normal hearing mode, amplifying both high frequency and low frequency sound, with more surrounding noise. H mode: lower the noise and weaken the sound of low frequency, less surrounding noise. Soft silica-gel material, does not harm to your ear, and also ensure wearing stability and lasting. Easy-to-wear design, conform to your ear shape, stable wearing and can ensures the comfort. Comes with 3 replacement earplugs in different sizes, widely suitable for different users with different demands. Specifications: Name: Hearing Device Material: ABS+silicone Model: V-185 Battery: 2 * AG13 battery, 1.5V, 3mAh (included) Voltage: DC1.5V Rated working current: ≤3mA Frequency response: 450-3500MHz Max sound output:127±4dB Max sound g-ain: 48dB±5dB Harmonic-wave distortion: ≤5% Input noise: ≤32dB Package size: 110 * 80 * 40mm / 4.33 * 3.15 * 1.57in Package weight: 90g / 3.17ounce Packing List: 1 * Hearing Device 3 * Replacement Earplug 2 * Battery 1 * Guideline