【HiFi Stereo Sound Quality】 Portable Bluetooth speaker with powerful 360° surround sound effect, DSP intelligent sound processing, automatically enhance the bass, simulate the stereo effect, 15 watt internal and external dual magnetic speakers adopt SAM bass enhancement technology, according to the characteristics of the speaker, the audio signal is processed on time, to ensure that the speaker continues to work with high fidelity and high power. 【Waterproof & Durable】Fully enclosed cavity design, waterproof to IPX7 level, the waterproof speaker can be used normally after being immersed in 1M deep cold water for 30 minutes without being affected. Zinc steel surrounds and fixes, exquisite and stable, without fear of falling and being beaten, sealed and dustproof design, the improved durable fabric material and rugged rubber housing protects it on all of your outdoor adventures. 【Long Battery Life & Fast Recharge】 The 1800mAh lithium battery lasts for 24 hours or about 500 tracks. It is small in size but has a large capacity. After being fully charged, the medium power can last for 24 hours uninterrupted, allowing you to keep music day and night during travel, work, recreation, and outdoor sports. A full charge takes just 2 hours with the included Micro USB cable. 【Bluetooth 5.0 Stable Transmission】 Compared with the Bluetooth 4.2 version, Bluetooth 5.0 can bring twice the data transmission speed. In terms of data transmission capacity increase, it can reach 800%. The speed is faster and more stable. It effectively reduces the playback delay. Propagation range ≥10M, compatible with all Bluetooth devices, smartphone, cellphone, laptop, computer, Mac. 【Mini Portable Speaker】 Never leave awesome sound at home again. Portable and compact design, easy to grasp with one hand, with strong and exquisite hooks, the outdoor Bluetooth speaker can be hung on backpacks, bicycles, tents, branches or walls, such as hiking, climbing, camping, indoor, outdoor. You can enjoy your own music anytime, anywhere.