Doosl Bluetooth Personal Sound Amplifiers , 2Pcs Mini Invisible Rechargeable Personal Sound Amplifiers for Seniors with Noise Cancelling , Volume Control , Portable Charging Case ,Green, 1 Pair

【Personal Sound Amplifiers with Bluetooth & One-step Pairing 】

Bluetooth Personal Sound Amplifiers for Ears upgraded Bluetooth automatic re-connection technology can simplify the connection process. Bluetooth 5.0 Automatically Linked When the Personal Sound Amplifiers Boot Up.   Greatly improve the transmission speed and providing    you with a low-latency listening experience. After the Bluetooth pairing is successful, we can use the Bluetooth function to listen to music, watch TV and answer calls, etc.

【Bluetooth Personal Sound Amplifiers for Ears Adjustable mode】When you are in different environments, you can switch between  quiet and noisy mode programs, which can ensure you have a clear sound in most environments.

【Double Noise Reduction Function】The newly upgraded smart chip, the noise reduction is 30% higher than usual. It sounds more natural and provides you with a wonderful experience. Excellent sound quality and comfortable listening. Suitable for all kinds of people with poor hearing, the angle of the earplugs can be adjusted, suitable for left and right ears.

【Safe and Comfortable Personal Sound Amplifiers】Bluetooth Personal Sound Amplifiers for Ears are made of the latest materials, the shell is nano-coated, waterproof and sweat-proof; material domes of different sizes are suitable for everyone, and equipped with cleaning tools to    extend the service life; very small, very suitable for your ear canal.

【Extra long time use】 Bluetooth Personal Sound Amplifiers for Ears is fully charged for about 4 hours and can be used for about 40 hours. You can be fully charged at night, which can satisfy you for 2 days of use.

【After-sales Service】If you encounter problems when using our ear Personal Sound Amplifiers for adults, please feel free to contact us, we are happy to serve you.

Why howling?

If there is a gap between the earbuds and the earholes, the microphone and earbuds will interfere, and in this case a beeping sound will be heard.

For example, if the microphone and speaker are too close on the KTV, the same beep sounds.

How to solve howling?

1. Check the size of the earplugs when wearing them . Choose the earbuds that best fit your ear. Insert the earplug firmly into the ear hole to ensure there is no gap.

2. Before wearing, please turn off the power and reduce the volume.

3. After wearing, turn on the power, gradually increase the volume from the minimum, and adjust.

Features:  

Function:Personal Sound Amplifiers, Bluetooth Personal Sound Amplifiers for Ears,Bluetooth Personal Sound Amplifiers for Seniors

Material:ABS+metal

Max sound out put:129+/- 3dB  

Sound gain:>= 40dB+/- 5dB 

Total harmonic wave distortion:<= 10%  

Frequency range:350-4500MHz  

Input Noise:<=32dB  

Voltage:d.c.1.2V  

Current:<=2mA

Charing box:

 Include 600mAH Full charing about 2 hours to Personal Sound Amplifiers recharing about 4 times

Package Include:

Bluetooth Personal Sound Amplifiers for Ears x2

Earplugsx6

Brushx1

User Maual x1

Charging Box x1

Recharging Bagx1

• Rechargeable Personal Sound Amplifiers for Ears
• Bluetooth Personal Sound Amplifiers for Seniors One-step Pairing
• Double Noise Reduction Function
• Charged for about 4 hours and can be used for about 40 hours.
• Easy to use: One Button to adjust the volume, one button to adjust the channel and switch Off/On.