Rechargeable Personal Sound Amplifiers, Wireless Sound Aid Digital Personal Sound Amplifier Devices for Seniors, Perfected Ergonomics, with Charging Box (White)
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Personal sound amplifiers for Seniors Rechargeable with Noise Reduction Personal Sound Amplifiers work by magnifying sound vibrations entering the ear. Although they aren't a cure, Personal Sound Amplifiers offer a potentially life-changing improvement to the way you hear.
# - What to do when you wear the personal sound Amplifiers device? 1.Adjust volume to the minimum before wearing. 2.Choose an earplug of slightly bigger size to avoid whistler. 3.Increase volume gradually to avoid sudden increase in sound. 4.If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight,the appropriate choice of earplugs and plugged, make sure no air leakage.
# - How to Care for Personal Sound Amplifiers? 1. Dryness: Personal Sound Amplifiers are electronic products and are prone to moisture. Pay attention to waterproof, moisture-proof and dust-proof. 2. Cleaning: Wipe with a dry, soft cloth. Use a small brush to clean the earwax inside and around the sound hole of the personal sound Amplifiers.
Specifications: 1. Maximum sound output: 111 +/- 5dB 2. Sound gain:>= 30dB +/- 5dB 3.Total harmonic wave distortion:<=5% 4. Frequency range: F1≤200Hz, F25000Hz 5. Input Noise:<= 28dB 6. Voltage: d.c.1.5V 7. Current:<= 1.2 Ma 8. Full charge in 2~3 hours, work more than 30 hours 9. 300mAh charging box for 3 times charging to extend amplifier with 90 working hours. 10. Charging box with power capacity led screen