1、Solar speakers, using advanced Bluetooth audio decoding chip, support the connection of all Bluetooth devices. 2、The sound quality is beautiful, the music is clear and soft, and the dynamic levels are distinct and give a different musicality. 3、Portable wireless Bluetooth speaker, small and light, with lanyard, more convenient to carry. 4、Support FM radio, you can directly search for radio stations in the listening area, and directly read memory cards and U disks. 5、Multi‑purpose speakers, support solar charging, with flashlight function, suitable for outdoor night travel. 1 x Wireless Bluetooth Speaker1 x USB-Micro Charging Cable  Item Type: Bluetooth SpeakerMaterial: ABSBluetooth Version: 5.0FM Search Frequency Range: 87.5-108MHzFrequency Response Range: 100Hz-16KHzSignal Transmission Distance: 10-15mInterface Type: MicroPlaying Time: 2-10 hoursCharging Time: 2-3 hoursCharging Voltage: DC 5V--- 0.5~2ASolar Panel Charging Voltage: 5V---120mABattery Capacity: 500mAhHow to Use:Bluetooth Mode: Turn on the speaker, and the host enters the Bluetooth mode by default. In other modes, you can press the mode switch button to select the Bluetooth mode. The blue indicator light flashes and waits for connection. At this time, turn on the Bluetooth of the mobile phone and set the status to be visible to all nearby Bluetooth devices, click Search, find BT SPEAKER and click pairing. The next time the host is turned on and selects the Bluetooth mode, it will automatically connect to the Bluetooth device used last time (the device used last time should be within the effective distance).PS: Bluetooth is a straight line transmission, the effective distance is 10-15 meters, avoiding objects and obstructions in the middle to affect the signal.Music Mode: Turn on the speaker to enter Bluetooth mode by default. At this time, insert the U disk or memory card and the machine will automatically switch to the music mode, read the memory card and play the songs stored in the memory card. When playing music, you can short press the play pause button to pause or continue to play the music, short press the previous or next song to switch music.FM Radio Mode: After the speaker is turned on, pull out the telescopic antenna, short press the mode switch M button to switch to FM radio mode, and then long press the play/pause button to automatically search for channels, at this time the radio station will quickly search and change channels, wait for tens of seconds to automatically search for channels The search will stop after completion. At this time, the channel will play a fixed station. Short press the previous song or the next song to select the switch to listen to the station.Volume Adjustment: When playing music, you can press and hold the previous song or the next song to increase or decrease the volume, when the sound of the sound box appears. That is, the maximum volume has been reached.Charging Instructions: The Micro interface is connected to a 5V charger. The indicator light will be red during charging. It is not recommended to use it while charging to avoid damage to the battery.