Features: 1. This hearing aid is specially designed for the hearing losing people. Wearing it, you can discover the pleasure of gathering with friends and family, feeling more confident at work and enjoying movies, music and TV programs. 2. Simple to use, no complicated program and operation, suitable for elderly and hearing loss people. 3. Help you to hear clearly and loudly, mini size and compact design, is comfortable to wear all day. 4. If you find it's difficult to hearing very well from others, a hearing aid can help you regain your hearing so you can live the life you are used to. 5. Full use of the ear structure to design the appearance of the hearing aid, which makes it perfectly fit wearer's ears for a comfortable wear. Specification: Item Type: Hearing Aid Material: ABS Maximum Voice Output: 130db+5db Maximum Sound Increase: ≥50db Wave Distortion: ≤5% Frequency Range: 300-4000Hz Input Noise: ≤30dB Power Supply Voltage: 1.5V Working Current: ≤4mA Battery: 2 x A10 Button Battery Package List: 1 x Hearing Aid 2 x Button Battery 4 x Earplug 1 x Instruction 1 x Brush Note: 1. Keep the volume to a minimum before wearing. 2. Choose slightly larger earplugs to avoid whistling. 3. Gradually increase the volume to avoid sudden loud sounds.