Outdoor wireless waterproof speaker with built-in lead-acid battery, suitable for both indoor and outdoor use; 30W high-power design meets the needs of background music playback and wireless voice explanation for group activities. The wireless transmission distance is greater than 25 meters, with channel mode selection design, enabling left channel, right channel, and left-right mixed audio selection functions. It can also be used with one, two, or more products simultaneously (supporting one-to-many transmission). Infrared remote control design enables contactless operation.