A better wireless music experience - New Bluetooth 5.4, upgraded battery life and sound The speaker features Bluetooth 5.4, which has numerous advantages over the older versions of Bluetooth commonly used by other speakers. With Bluetooth 5.4, enjoy better energy efficiency and reduced power consumption, longer battery life, faster signal transmission, lower latency, and an overall smoother listening experience. Supports wireless stereo, more immersive listening Auracast wireless technology allows two Bluetooth speakers to be connected without having to switch between devices. With two speakers, you experience a more open and 3D sound space through phase differences, making for an immersive live concert and movie-like feeling. When outdoors, the speakers can be paired with a projector to make an open-air movie theatre. 21 hours of battery life, convenient for outdoor activities Inside the speaker is a large 1400mAh battery, which, after charging for only two hours through the Type-C plug, can be used for a long time, making it suitable for outdoor use cases such as cycling, hiking, and climbing. Specially designed circuit and acoustic algorithm 45mm low-distortion full-range high-quality speaker driver featuring a special fibre diaphragm, Robust bass, transparent and natural vocals, rich and detailed treble; An algorithm tuned by an established Hifi company, achieving great sound. IPX6 waterproof, don’t worry about the weather High-level water resistance ensures you can use the speaker even when raining or in damp conditions, and allows it to easily fit into your life whether you are hiking, cycling, camping, or just going around the city.