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 MP3/MP4/external computer and other audio input functions (AUX) FM 5 Jianrong advanced chip solution power amplifier IC imported from the United States 6 With power bank function Stereo sound quality, powerful bass 7 Bluetooth 2.1 speaker configuration, sound quality is saturated 8 high-end mid-low frequency configuration configurations, high-end configuration, real full-frequency breakthrough 9 New environmentally friendly waterproof material paint iron mesh technology 10 innovative shapes, outdoor color matching 11 more straps Portable support + strap + sharing d e silicone handbag 12 bracket 1 + 1 couplet outdoor bracket IPX6 waterproof Output woofer: 8 ohm 25W*1 Tweeter: 48W*2 Input sensitivity: 400 mV Separation: 90dB SNR: 80dB Working voltage: DC 7.4V Battery: 18650: 6000MAH Battery life: 4-7H Total power: 40W Woofer*1 size: 4 inch Tweeter size *2: 66 mm*2 Built-in bass radiator: 90 110 mm * 2