Please be kindly noted,the listed product is produced and distributed abroad and subject to the laws of its country of origin. This hearing device 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, fine quality chip, invisibility fleshcolor surface will not incongruity in the crowd. User-oriented design make the hearing device can perfect the ear. You can have a try. Features: This heard in hearing device is designed for old people or people with hearing problems, suitable for those people who was hearing loss or patients. User-oriented design make the hearing device can perfect the ear. Low power consumption, high-fidelity, fine quality chip, with soft silica gel, does not harm to your ear. This affordable hearing device have volume control, can adjust the volume to fit your own needs and preferences. Powered by built-in battery, smaller, simpler, more convenient, more powerful and more stable. Use digit circuit, automatic noise dropping technology, natural sound, provides you a comfortable experience. Ergonomic earplugs design, will not feel pain even after long time wearing. Note: To avoids being swallowed by children accidently, keep small parts out of children's reach. Specifications: Name: Hearing Device Material: plastics Color: red-right ear, blue-left ear, 2pcs (optional) Battery(according to your selection): 1pcs left ear/right ear: 1 * A10 battery, 1.4V, 1.2mA (included) 2pcs: 2 * A10 battery, 1.4V, 1.2mA (included) Max sound out put: 122±3dB Sound gain: ≥28dB±2dB Total harmonic-wave distortion: ≤3% Frequency-range: 300-4800MHz Input noise: ≤26dB Package size: 135 * 65 * 25mm / 5.31 * 2.56 * 0.98in Package weight: 1pcs: 45g / 1.59ounce 2pcs: 58g / 2.05ounce Packing List(1pcs): 1 * Hearing Device 3 * Earplug 1 * A10 Battery 1 * Vent Rod 1 * Guideline OR Packing List(2pcs): 2 * Hearing Device 6 * Earplug 2 * A10 Battery 1 * Vent Rod 1 * Guideline