The speaker has high-quality sound and a maximum power output 16W. It features a large volume sound cavity and dual sound modes (Normal & Deep Bass). It has two speakers connection, auto output left-right channel and a long playtime. You only have to charge it once for 13 hours of playtime. The speaker is IPX7 waterproof and can be used in the bathroom and outdoor scenarios. It has a built-in microphone making it easy for calls.