The Soundcore Select 4 Go Bluetooth Speaker by Anker is a 2-pack of rectangular-shaped portable speakers designed for outdoor use. They are black in color and made of durable PC+ABS material. These Bluetooth speakers are compatible with Apple and Android devices, and offer features such as waterproof, dustproof, and floatable capabilities. With a manufacturer warranty of 2 years and a compact design, these speakers are perfect for on-the-go audio enjoyment in any environment.