MAXROCK Sleeping Headphones, in-Ear Soundproof Earplug Instructions Manual
Get a comfortable and noise-free night's sleep with MAXROCK Sleeping Headphones. These in-ear soundproof earplugs efficiently block noise and feature noise cancellation and stereo capabilities. They are compatible with MP3 MP4 devices, cellphones, tablets, and laptops, and won't fall out due to their ear-hook design. Keep your volume below 70% and use the 60/60 rule for safe listening. Get a three-month guarantee with easy returns or replacement.