Massive 400W Power Output: Experience high-quality sound with deep bass and clear vocals, perfect for large parties, events, or outdoor gatherings. Dual Wireless UHF Microphones: Includes two wireless microphones for easy and hassle-free karaoke sessions, speeches, or performances. 30000mAh Battery with 10-Hour Playtime: Enjoy long-lasting performance with a powerful battery that keeps the music going for up to 10 hours on a single charge. 60W PD Fast Charging & TWS Pairing: Charge quickly with PD fast charging and pair two S873 speakers for immersive stereo sound. IPX6 Waterproof & RGB Lights: Designed to handle the elements with IPX6 waterproof resistance, plus vibrant RGB lights to enhance the atmosphere.