Portable outdoor Bluetooth speakers that support multiple speaker connections, have TF card support for memory cards, RGB lighting, HIFI stereo sound, and are waterproof. Travel Light with a Portable Lanyard Anywhere This sturdy, flat-woven lanyard, which can be attached to bicycles or backpacks, significantly lessens finger strain. Wireless Connection via Bluetooth 5.1 It guarantees low power consumption, anti-interference performance, fast connection, and stable transmission in addition to avoiding messy wiring. The TWS Connection It transforms your living room into a movie theater with its separate surround stereo system and cinematic sound effect. Extended Battery Life The 2,400mAh Li-polymer battery allows for up to eight hours of continuous playback. Rate of Waterproofing They are made with an IPX6 waterproof rating and woven fabric that is resistant to impact and wear.