Some people use earplugs to sleep better. Typically, these devices cost a few dollars. Bose, a renowned company in the audio equipment industry, launched a $ 250-dollar pair. Bose noise-masking sleepbuds have a dedicated application called Sleep (Android and iOS). It offers a selection of sounds - waves, cascade, dog bark, etc. - which can help some users to sleep more easily.
Bose plugs have a 16-hour autonomy but can not be used to listen to music or calls. Charging the batteries is done in the special case with which they are delivered. Devices will soon be in Europe as well