The Altec Lansing Jacket H20 4 Black Rugged Bluetooth Speaker is a portable and waterproof speaker system designed for outdoor use. With a sleek black cube shape, this speaker is compatible with various brands and models, including Apple and Android devices. It features a 2.0 channel surround sound format, 5W RMS power, and a 1500 mAh battery capacity for long-lasting playback. The speaker also supports wireless connectivity via Bluetooth and touch controls for easy operation, making it a versatile and convenient audio solution for on-the-go use.