Bluetooth Speaker Outdoor Portable Dual Diaphragm Multi-mode Playback Features: Plastic material, strong sense of value. Elegant shape and shocking sound. Novel structure, 2 bass diaphragm Multi function: (Bluetooth / Karaoke reverberation / radio / / U disk / audio). Large capacity: long , built-in 2000 high-capacity lithium battery, long allows music to power continuously. Wireless Bluetooth 5.0 transmission technology, most Bluetooth devices in the market, stable transmission without jamming, 10 meters connection distance. Product Description: The 5W high-power speaker is equipped with a heavy bass diaphragm, so that the bass output is naturally balanced, just like the interpretation of the scene. Features: sound source, resonance unit, high-speed transmission, ultra long standby, surround sound effect, multi-color selection, multiple sound sources, compact and portable. Bluetooth 5.0: for low-power devices, it has a wider coverage and four times the speed. Four sound source input modes: Bluetooth link, U disk input, input and Parameters: Speaker: 5W Battery: lithium battery Charging time: 2 ~ 3 hours Bluetooth: 5.0 Frequency response 100HZ-18KHZ Signal to noise ratio: 85dB Charging requirements: 5V / 1A ~ 2A Product size: 11 *7.5 *7.5cm Charging interface:USB Input mode: Bluetooth \ U disk AUX AUDIO port contain: 1X speake 1X Charging line 1X instructions