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, FM 5. Support external MP3/MP4/computer and other audio (AUX) input functions 7. Stereo sound quality, rising bass 8. Support mobile power 9. Supports 1+1 10 series. Waterproof fabric mesh technology supports XP6 waterproof Output power: 5W*2 External magnetic speaker: 4 5W*2 Input sensitivity: 400mV Separation: 90dB SNR: 80dB Working voltage: DC 3.7V Battery: 18650: 2400Ah Battery life: 4H Speaker size: 57MM*2 Exposed bass radiator : 65mm*1+5090mm*1