XMENHA Sleeping Active Noise Canceling Earbuds Earphones Wireless Bluetooth Active Noise Cancelling Earbuds for Sleep Noise Reduction Ear Buds Sleeping Noise Cancellation Bluetooth Headphones Color:Black Inward-facing microphone listens inside ear

Inward-facing microphone listens inside ear canal to pick up internal sounds and produce anti-noise again to twice cancel the left noise

The contour of each invisible earbud is crafted to suit the shape of your ear

Transmission distance: about 10 m

The sound quality has been strictly tested

XMENHA Sleeping Active Noise Canceling Earbuds Earphones Wireless Bluetooth Active Noise Cancelling Earbuds for Sleep Noise Reduction Ear Buds Sleeping Noise Cancellation Bluetooth Headphones Color:Black Inward-facing microphone listens inside earActive Noise CancellationEarbuds wireless bluetooth noise cancelling Ear caps prevent 90% noise going to ear canal. 1. Outward facing microphone detects external sounds and counter with equal anti noise to first cancel noise. 2. Inward facing microphone listens inside ear canal to pick up internal sounds and produce anti noise again to twice cancel the left noise. Sleep Earbuds BUT Not For Side Sleepers Noise cancelling earbuds built in mic Perfect