Earphones To Block Out Sound
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Related Faq
Q
The recorded sound is too low?
A
①Please shorten the distance between the microphone and the sound source reasonably to avoid breaking the sound. ②Please click the volume button on the receiver to increase the volume. ③Some brands of mobile phones require the "OTG" function, please activate it on system settings. Check with your mobile provider for details. 
Q
Can I connect Bluetooth earphones from other brands?
A
Yes, M3 can be connected to any brand of Bluetooth earphones for intercom. 
Q
What wavelength do these block?
A
I don't know about wavelengths. It blocks ultra violet light. The most noticeable effects are that A) it makes blue sky much darker at right angles to the sun and B) it will cut out reflections from the surface of water. 
Q
Can you record sound?
A
No, you can only record videos and take photos. 
Q
Is the sound loud enough?
A
Loud enough and with good bass.Happy with sound quality overall. 
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