The product can help you sound clearly and loudly when you see film, watch the match, have a meeting, or classes, etc. hearing aids have volume control that you can adjust the sound volume according to your own needs and preference. •Help people with hearing impairment to hear sound and voice •Loud and clear voice •Super mini size and light weight •Adjustable volume control •High sensitivity and easy operation •Silicone earplugs in 3 different sizes, fit most ears •Note: •1, Please don't use the hearing aid at a high volume for a long time. •2, Don't use it when swimming or raining, and don't expose the hearing aid under the sun. Specification: •Brand: AXON •Model: K-86 •Power supply: 1 x Cell battery •Wearing type: Wireless BTE •Max sound output: 110 ± 5dB •Sound gain: ≥ 30dB •Total harmonic wave distortion: ≤ 10% •Frequency range: 300 - 4000Hz •Input noise: ≤ 40dB •Working voltage: DC 1.5V •Working current: ≤ 4mA •Product Weight: 0.003 kg •Product Size (L x W x H): 1.8 x 0.9 x 1.8cm Package included: •1 x Mini Wireless BTE Sound Enhancement Amplifier Hearing Aid •2 x Cell Batteries •3 x Earplugs •1 x User Manual