[Immersive Sound Experience ]: Bluetooth speaker equips with a 20W(2 x 10W) of stereo audio drivers speaker, an advanced digital signal processor, portable speaker delivers powerful, well-balanced sound with minimal distortion. Bluetooth speaker wireless is your perfect partner for playing games, listening to music and watching movies. Plus, The speaker's built-in microphone, you can also answer, end and reject calls through the portable bluetooth speaker.[IP7 Waterproof & Rugged Design ]: Engineered to handle rough use and adverse weather conditions, this speakers wireless bluetooth features a durable design and an IPX7 rating for protection against water splashes and spills. The improved, durable fabric material and rugged rubber housing protects speaker on your outdoor adventures. With drop resistance and rust resistance, S1 perfect for using in house parties or taking to pool parties, beach parties, barbecues, biking, hiking, camping, etc.[4400mah Large Capacity & Fast Charging ]: Wireless speaker built-in rechargeable 4400mAH battery supports up to 18+ hours of playtime from a single charge to keep the music playing on camping weekends, days at the beach, boat trips, and more. Thanks to the USB-C port, it not only provides 2A fast charging, but also makes it convenient for you to use. Most devices have a USB C port, there is no need to carry an extra charging cable for your portable speakers wireless bluetooth.