500mAh battery capacity, 3H play time, 2H charging time. This speaker can be used alone, or two speakers can be wirelessly connected to achieve surround sound. Mini subwoofer, small size and large volume, compact and convenient to carry. Equipped with a large 52mm woofer with a power of 5W, the whole sound field can be extended to give you a strong bass feeling. FM function, TF card, and U-disk plug and play, support MP3 format play, support memory card up to 32G. The voice is melodious and shocking. The timbre is clear, full, and pure.