Ideal for Side Sleepers: Sleep A20 utilizes the combined efforts of soundcores Air Wing and 3D ergonomic designwrapped in an ultra-soft materialfor the added benefit of pressureless comfort, even when sleeping on your side. Ultra-Long Playtime: Sleep mode boasts 14 hours of battery life on a single charge, extended to 80 hours with the case. Bluetooth mode offers 10 hours of playtime, with an additional 55 hours via the charging case. Peacefully Stream Content via Bluetooth: Curate your sleep soundtrack with a stable Bluetooth 5.3 connection and a customizable white noise library to compose a perfect night's sleep. Sleep Analytics for Better Sleep: Using a MEMS sensor, Sleep A2