They are compact, discreet digital hearing aids (model WA-A7) designed to improve listening for people with hearing challenges. They feature rechargeable batteries, 4-channel digital processing, noise reduction technology, and a frequency bandwidth optimized for everyday sounds.
They are intended for adults with mild to moderate hearing loss and may assist some people with more severe loss. They are commonly used by elderly users and anyone seeking a small, everyday hearing solution. For severe or suspected profound hearing loss, consult an audiologist before purchase.
They are designed to be small and discreet for comfortable daily wear. 'Invisible' refers to their compact, low-profile form factor, but visibility can vary depending on ear shape and hairstyle.
A 4-channel device divides incoming sound into four frequency bands so amplification and noise reduction can be adjusted more precisely across low, mid, and high frequencies. More channels generally allow finer tuning to match a user's hearing needs.
The effective bandwidth is 200 Hz to 6500 Hz, which covers the main frequencies of human speech and many environmental sounds important for everyday listening.
OSPL (output sound pressure level) indicates the maximum sound output the device can produce. A value around 108 dB ±3 dB describes the peak high-frequency output. This helps professionals assess whether the device can provide sufficient amplification, but safe use requires proper fitting and volume control.
Yes — they are rechargeable for convenience. Specific charger type, charging time, and expected runtime are provided by the manufacturer; consult the product manual or seller for exact charging instructions and typical battery life.
They include digital noise reduction technology that reduces steady background noise and enhances speech clarity. Effectiveness depends on listening environments and individual hearing profiles; noise reduction improves comfort but may not eliminate all background noise.
Yes — the device offers adjustable settings for personalized sound. Some adjustments are user-accessible; more precise fitting and programming may be done by an audiologist or hearing professional for optimal results.
These hearing aids may assist people with residual hearing but are not a solution for complete (profound) deafness. People with profound deafness should consult an audiologist about cochlear implants or other interventions.
Regular maintenance includes wiping the device with a dry, soft cloth, removing earwax, using any provided cleaning tools, keeping the device dry, and storing it in a safe case when not in use. Follow the manufacturer’s cleaning and care instructions to maintain performance and longevity.
This product is listed as Instrument Classification Class II. Regulatory requirements and approvals vary by country; check local regulations and seller documentation for compliance and registration details.
Yes — the product listing indicates OEM/ODM availability, which means manufacturers can provide custom branding, packaging, or minor design changes. Contact the manufacturer or supplier for minimum order quantities, lead times, and customization options.
The single package dimensions are 14.2 x 8 x 3.2 cm with a gross weight of approximately 1.000 kg. Actual contents (e.g., charger, cleaning tools, user manual, number of devices) can vary by seller — confirm the included items with the supplier before purchase.
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