1, strong welding sound effect, super bass 2. Bluetooth automatic search, the receiving distance of 10M and less 3, support MP3, WMA format music files 4. Support TF card , Bluetooth with call, file playback 5. Support external MP3/MP4/computer and other audio (AUX) input functions 7. Stereo sound quality, rising bass 8 with power bank function 9High configuration -Bluetooth 2.1 speaker, the sound quality is saturated 10 high-end configuration mid-low frequency configuration high-end real shock wave 11New waterproof and environmentally friendly fabric mesh technology IPX6 waterproof 12 Innovatively shaped square drum Strap 13 More Holding hand + strap 13 Support 1+1 verse 13 Support EQ mode, free choice of three sound effects, with colorful smart LED Output woofer: 8 ohm 35W*1 Tweeter: 412 W*2 Input sensitivity: 400mV Separation: 90dB SNR: 80dB Working voltage: 7.4V DC Battery: 18650: 6000MAH Battery life: 4-6H Total power power: 55W woofer *1 size: 115mm Tweeter size *2: 66mm*2 Built-in bass radiator: 102 115mm *2