Wireless Bluetooth 5.3 Sleep Earphones for Sleeping, Upgraded, In-Ear, Painless, Mini, High Sound Isolation, SingleBinaural, Separate Left and Right

[Equipped with the latest Bluetooth 5.3 chip] These low-latency wireless earphones automatically pair and instantly connect to your smartphone when you open the charging case. Significantly reduces dropouts, skips, and delays. [Long-lasting use & includes charging case] Despite its compact size, the earphones boast a large capacity and long standby time! A single charge provides approximately 4 hours of music playback, allowing you to sleep comfortably all night. The case's battery capacity allows you to charge the earphones four times. Even if you go out for the whole day, you can use them without worrying about running out of power. *Usage time may vary depending on usage conditions. [High Sound Isolation and High Sound Quality] These noise-canceling earphones feature an in-ear design that conforms to the shape of your ear to minimize ambient noise. You can create a quiet environment by playing music or white noise. The mild sound quality makes them perfect for listening before bed, helping you fall asleep faster and sleep better. They're perfect for concentrating on studying or sleeping! Recommended for those concerned about noise and sound leakage to others. [Amazingly compact, eliminating the foreign body sensation of conventional in-ear headphones] These sleep earphones feature soft silicone and an ergonomic design. They fit gently in your ears, about the diameter of a 1 yen coin, and each earbud weighs just 2g! They won't get in the way when you toss and turn in your sleep, and they won't get caught or fall out. They're perfect for those with small ear canals, as they won't cause pain or discomfort even when worn overnight. [Quality Guarantee] If a quality problem occurs within 12 months of normal use, we will replace it with a new one free of charge. How to contact us: Log in to Amazon → Order History in Account Services → [Contact Seller] displayed to the right of the relevant order.