Material: ABS2. Sound output (max): 129+/- 5dB3. Sound gain (max): 55dB+/-5dB4. Frequency range: 450~3500 hz5. Battery: 1 AA batteries (batteries not included)6. Product size: 6.6 x 4.3 x 1.6cm 8.
eBay
Behind the ear hearing aid 2. Silicone earplugs in 3 different sizes, fit most ears 5. Sound output: 110+/-5dB 2. Sound gain: Greater than or equal to 30dB 3. Total Harmonic wave distortion: Less than or equal to 10% 4.
eBay
Material: ABS 2. Function: hearing aid 3. Weight: about 10g 4. Only supports people within 80 decibels Features: 1. Digital chip, long-lasting battery life 2. One-key operation, easy to operate 4.
eBay
Sound output: 114-122dB Max2. Sound gain: 30-34dB3. Total harmonic distortion: 7%4. Frequency range: 300-3800MHz5. Input noise: 32dB6. Current: 2mA8. Built-in battery: 45mAh9. Input noise: 32dB.
eBay
Safe to wear and will not hurt the ear canal4. Sound gain: 30+/-5dB7. Frequency range: 100~4000Hz8. Signal-to-noise ratio: less than or equal to 45dB9. Working current: less than or equal to 10mA11.
eBay
Material: silicone2. Weight: about 5 grams3. Open design increases air circulation in the ear canal2. Dont block your speech, and your voice sounds real and smooth3. Silicone material, fit to wear, healthy and safe4.
eBay
Mini and lightweight, ergonomic design, invisible and comfortable to wear3. Suitable for the elderly and hearing impaired6. Material: plastic2. Sound output : 115dB3. Sound gain: greater than or equal to 28dB4.
eBay
Material: ABS2. Hearing aid battery capacity: 40mAh3. Charging port: Type-CFeatures:1. The hearing aid will automatically turn on after 10 seconds after taking out the charging box, which can effectively avoid howling3.
eBay