Features:The product looks like a BT headset, which can protect your privacy. You don't have to worry about discrimination anymore.Fine quality material, safe and non-toxic, suitable for a long time use.Mini and lightweight, ergonomic design, invisible and comfortable to wear.Intelligent noise reduction. It can greatly reduce noise, providing high clear sound quality.Support volume adjustable, easy to adjust the volume to meet your needs.Suitable for the elderly and those people with hearing loss, perfect to help hearing the outside sound again, regaining confidence. Comes with different types of earplugs to fit different ear sizes.Comes with a Charging-case for recharging the device anywhere and anytime. (The Charging Case is without built-in batterys and it is powered by most USB devices.)Easy to operate and use. Specifications:Material: PlasticColor: Skin ColorQuantity: 1 PairMax Sound Output: 115+/-3dBSound Gain: 28dB+/-5dBTotal Harmonic Wave Distortion: 3%Frequency Range: 300-3500MHzInput Noise: 32dBVoltage: DC1.5VCurrent: 2mAHearing-aid(Each One): Built-in 25mAh Rechargeable BatterysCharging Time: 6 HoursWorking Time: 16 HoursPackage Size: 170 * 90 * 50mm / 6.69 * 3.54 * 1.97inPackage Weight: 210g / 7.41ounce Notes:1. The Charging Case is without built-in batterys and it is powered by most USB devices.2. Due to the different monitors and light effects, the actual color of the product maybe slightly different from the picture color, thank you for your understanding Packing List:1 Pair * Hearing-aid1 * Charging Case.