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. Directly inserted into the recharging base for convenient USB recharging, and the indicator light can direct display the recharging status.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. Easy-to-wear design, conform to your ear shape, stable wearing and can ensures the comfort. Full digital circuitry, low power consumption, adaptive noise reduction, adaptive feedback cancellation. Soft silica gel material, does not harm to your ear, and also ensure wearing stability and lasting. Directly inserted into the recharging base for convenient USB recharging, and the indicator light can direct display the recharging status. Easily button control, easy to power on/off and adjust the volume, user friendly and convenient. Comes with 3pcs earplugs in different sizes, widely suitable for different users with different demands. Specifications: Name: Hearing Device Material: ABS+silicone Battery: 1 * built-in battery, 3.7V, 4mAh (included) Voltage: DC3.7V PeakOSPL 90(dB SPL): 125dB HAF-OSPL 90(dB SPL): 115dB Peakgain(dB): 35dB HAF/FOG Gain (dB): 30dB Rated working current: 4mA Frequency response: 300-5500Hz Equivalent input noise: 28dB Charge time: 4-6 hour Working time: 32 hours Hearing device size: 14 * 20 * 30mm / 0.55 * 0.79 * 1.18in (1pcs) Package size: 140 * 123 * 38mm / 5.51 * 4.84 * 1.50in Package weight: 90g / 3.17ounce Packing List: 1 * Hearing Device 3 * Earplug 1 * Brush 1 * USB Cable 1 * Recharging Base 1 * Guideline