Overview: Solar charging, green environmental protection. Wireless Bluetooth play, 3s quick pairing connection. Built-in 1200mAh lithium battery, charging safe and fast. Multi-function: Automatic Solar Charging/Phone Holder/Flashlight Lighting Input: Bluetooth 5.1/Call/U Disk/TF/AUX/Radio Antenna Specifications: Function: insert card, radio, solar charging, dustproof, anti-drop, voice prompt, call function, NFC function Interface type: USB Battery capacity: 1200MAH Frequency response range: 100HZ-20KHZ Output power: 5W Signal to noise ratio: ≥75dB Power supply mode: built-in lithium battery Channel: 2 Playing time: 8 hours Expansion storage: 32GB Number of speakers: 2 Effective distance: 10 meters Shell material: plastic Color: blue, black, red Size Information: 215*60*80MM Package Content: 1x audio + 1xUSB cable