This heard in hearing a-ids is designed for those who got hearing problems, suitable for hearing loss or patients. Low power consumption, high-fidelity, fine quality chip, user-oriented design make the hearing a-id can perfect the ear.Features:1.Designed for old people or people with hearing problems, suitable for helping hearing loss or patients.2.Low power consumption, high-fidelity, fine quality chip.3.Comes with volume control to fit your own needs and preferences.4.Mini size and light weight makes it easy carrying and space-saving.5.Use digit circuit, automatic noise reduction, high sensitivity, natural sound, provides you a comfortable experience.6.Non-toxic material equipped with soft silica gel, will not harm your ear.7.Equipped with 3 different size earplugs, ergonomic design, nice wearing feeling.Specifications:-Product name: Hearing Aid-Material: silica gel + ABS-Max sound output: 1255dB-Sound gain: 435dB-Total harmonicwave distortion: 20%-Equivalent input noise level:40dB-Frequency range: 200-7500Hz-Voltage: DC3V-Colour: As pictures-Battery: 2 * lithium battery, 1.5V, 140mAh (included)-Package size: about 125 * 95 * 40mm / 4.9 * 3.7 * 1.6inches(Length * Width * Height)-Package weight: about 54g / 1.9ouncesPacking List:1 * Sound Amplifier Host3 * Ear Plug4 * Cell1 * Instruction