Hopestar Wireless Bt Speaker Portable Subwoofer Outdoor Waterproof Pulse Rgb Stereo Surround Subwoofer Black 4713062623907

Total power: 30W External magnetic nozzle: 30W(15W * 2) 4Ω. Operating voltage: 3.7V Battery: 18650:4000 mAh Battery working : 4-6H Aperture...