The Zyhkon Sleep SU9 Wireless Earbuds are designed specifically for sleeping or relaxation purposes, with a frequency range of 2.4 GHz. These double earpiece earbuds come in a sleek black color and are from the brand InEar. Manufactured in the 2020s, these wireless earbuds do not come with a charger included and have no warranty. The SU8 model offers a convenient wireless connectivity feature, making it easy to use for those looking to enjoy music or white noise while resting.