Powerful welding sound quality, exceptional deep bass Automatic Bluetooth search, receiving distance of 10M and below Supports MP3, WMA music file formats Supports TF card, Bluetooth with calling function, and file playback Supports external audio input functions for MP3/MP4/computers, etc. (AUX) Stereophonic sound, booming bass Equipped with a mobile power function Bluetooth 5.0 speaker for saturated sound quality Configured with high-end mid-low frequency settings for a true shocking wave New environmentally friendly waterproof cloth mesh craftsmanship, IPX6 waterproof rating Innovative design with unique LOGO craftsmanship, original full-transparent lighting visual effect with vibration mode Comes with a shoulder strap for easy portability, IPX6 waterproof Supports 1+1 pairing, with matching wireless microphone Supports EQ modes with three sound effects to choose from, with LED smart color Specifications: Output low-frequency horn: 4Ω 35W * 1 High-frequency horn: 4Ω 10W * 2 Input sensitivity: 400mV Separation: ≥90dB Signal-to-noise ratio: ≥80dB Operating voltage: DC 7.4V Battery: 18650 8800mAh Battery working time: 6-8H Total power: 55W Size of low-frequency horn: 90mm Size of high-frequency horn: 66mm * 2 Diaphragm size: 88mm * 2 Bluetooth version: 5.0 Bluetooth solution: Jieli Main control: AC6921A Machine size: 310 * 12.1 * 12mm Weight: 2065G