Long battery life: the speaker contains a battery capacity of 750mah, charging for 1 hour, listening to music for 8 hours (volume 60%). 360 surround sound effect: 360 three-dimensional surround, the non-destructive sound quality is amazing, and the sound is clear, just like being on the stage. Sturdy and durable: the anti-collision steel mesh is reinforced, which is stronger and more durable. Allows cyclists to enjoy music during a bumpy trip without worrying about the speaker falling off. Easy to carry: It has a detachable bicycle mounting frame and hook , so you can carry it in the mountains, on muddy ground, etc. without fear. IPX7 waterproof and dustproof: IPX7 waterproof level is much stronger than IPX5 waterproof life. It is very suitable for outdoor activities such as cycling, running and hiking.