The Anker SoundCore Sleep A20 White (A6611G21) headphones are specifically designed for comfortable sleep, especially for side sleepers. They provide effective passive noise isolation thanks to the 4-Point Noise Masking system and unique Twin-Seal ear cushions, which offer three times better isolation compared to standard silicone tips. The ergonomic design with soft materials and Air Wing technology ensures comfortable wear throughout the night, preventing pressure on the ears even in a side position. With Bluetooth 5.3, the headphones allow you to play music or white noise from the built-in library, as well as stream audio from mobile devices. In sleep mode, the headphones last up to 14 hours, and with the charging case, the total battery life reaches 80 hours. In Bluetooth mode, playback lasts up to 10 hours, extendable to 55 hours using the case. Additional features include sleep tracking with built-in sensors, a personalized alarm, and the ability to customize soundscapes through the Soundcore app. The headphones have an IPX4 rating, making them resistant to splashes. The Anker SoundCore Sleep A20 White (A6611G21) is a reliable solution for improving sleep quality, combining comfort, advanced features, and long battery life.