[20W strong bass] The portable speaker is designed with 10W*2 dual precision drivers and a separate bass button, which can output high-definition sound and enhance bass from all directions. Equipped with stereo widening DSP chip and noise reduction technology, perfect balance between bass and treble.[IPX7 strong waterproof] Bluetooth speakers provide strong waterproof protection, IPX7 grade protection can resist rain, splashes, and dust. The durable silicone shell and port cover make the speaker have better internal protection, allowing you to enjoy music in a variety of different environments.[36 hours long play time] Portable Bluetooth speakers provide soundtrack for any adventure. The 4400mAh rechargeable battery can be fully charged within 4 hours by charging, and has a playback time of up to 30-36 hours.[360 Surround Sound] Our wireless speaker Bluetooth TWS technology allows you to wirelessly pair two Bluetooth speakers with your mobile phone, creating a unique immersive listening experience and giving you an immersive feeling.[Excellent compatibility] Advanced Bluetooth 5.0 can easily connect to any device range, up to 100 feet, and get continuous sound. The waterproof speaker Bluetooth supports non-Bluetooth devices through the built-in Micro SD/TF card slot.