Sleep Learning Drum Noise-canceling Headphones

Product Information:  

Material: ABS Sponge

Noise Reduction Rate: 27

Function: Sound Insulation

Scope of Use: Home Travel

Series: Hearing Protection

SNR: 26

NNR: 31

How to Wear: Headwear

Lining Material: Sponge

Suitable for Noise Environment: 32

Thickness of Cup Cover: 3MM

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