The Soundcore Boom 3i Outdoor Bluetooth Speaker in black is a waterproof and portable speaker system designed for outdoor use. With a powerful 50W RMS power output and Dolby Digital surround sound formats, this rectangular-shaped speaker provides high-quality audio performance. It features a 16-hour battery life, dynamic driver technology, and a convenient carrying strap for easy portability. The speaker is compatible with various brands including Universal and Anker, and can connect via Bluetooth, USB, or USB-C for versatile connectivity options. Perfect for enjoying music while on the go in any weather conditions.