• Charge faster, longer working time Using smart charging chip, magnetic charging efficiency is high. The personal sound amplifier can be fully charged within 2 hours and can be used for 35 hours. The charging box can be fully charged within 3 hours, and the charging box can be used to charge two earphones 4 times. The personal sound amplifier will automatically turn on within 10 seconds after it is taken out, and will turn off automatically when it is placed in the battery box for charging.
• Intelligent Noise Cancelling, Cinema-level Listening Feeling Constructed from digital chips for a smart design, digital personal sound amplifier with noise reduction which differentially amplifies the bass, midrange, and treble of different frequency bands. Provides natural sound quality and higher sound gain.Bring you back to the pure and clear sound.
• Easy To Use One button to adjust volume and turn on/off. Short press for volume adjusts, long press for turn on/off, no need to take it off. (Please ensure that the earplugs closely match the ear canal. otherwise, it will easily cause sound feedback and howling)

Hearing Aids Specifications: Brand: Richgv Color: White Charging current: DC5V / 50mA ~ 1A Battery: Lithium battery 60MAH Size: 1.76x1 57x0. 39 inch Weight: about 6.5g Maximum sound output: 129 + 4dB Sound gain: 38 + 5dB Harmonic Distortion: = 5% Frequency Range: 400Hz ~ 3800Hz Voltage: D.C.3.7V

Package Included: 1 X Hearing Aids

What to do when you wear the personal sound amplifier device?

Adjust volume to the minimum before wearing. Choose an earplug of slightly bigger size to avoid whistler. Increase volume gradually to avoid sudden increase in sound. 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.

The delivery time is around 5-10 working days after your purchase.