Bluetooth version: V5.0 Transmission distance: 10 meters Output power: 5W Speakers: Full-range 4-inch bass stereo Frequency response: 100Hz-20KHZ Product material: ABS material Built-in voltage: 3.7V Signal to noise ratio: 70db Battery capacity: 500MA Adjust volume: swipe to adjust Automatic pairing: support Playing time: 2-3 hours Audio input: Bluetooth, TF card, U disk Product size: length 235mm * width 108mm * height 108mm Packing size: length 245mm * width 134mm * height 114mm Net weight: 341g Gross weight: 456g