Features:Cool breathing light, Bluetooth connection playback, two-way hands-free calling, TF card u disk music playback, external audio input playback, FM radio function.1.Supports all wireless device connections with advanced wireless audio decoder chip.2.Support LINE IN audio input, provide you with computer speaker function, can directly connect mobile phone, tablet computer, TV to play music3.Dual-speaker stereo, smart crossover technology, high-fidelity speakers, pure and beautiful sound quality.4.A variety of flashing mode illusion LED lights, the lights can be converted by the melody of the music, one button to change, listening to music while giving you a bright light.5.High quality microphone, low noise filtering, echo suppression technology, call distance up to 2M, support multiple people to talk at the same time.6.Support FM radio, you can directly search the radio station in the listening area, the journey is only a music companion, as long as the FW radio function brings you more exciting journeys.7.Multi-function, meet daily listening needs; built-in high-performance lithium battery, support TF card music playback, AUX audio input playback, U diskplayback, hands-free calling function, whether you are out or at home, can meet your needs.Description:Working voltage: 3.7vCharging voltage: USB usbDC5V 500-1000MAUSB specification: usb2.0 compatible usb1.1Speaker specifications: 4 3WSignal to noise ratio:> 80dbDistortion: <1%File format: MP3, WAVFrequency response: 20-20khzBattery capacity: 2500mahProduct gross weight: 474gProduct size: 17.5 * 7 * 5cmVolume adjustment: supportMusic switching: supportCall rejection: supportPackaging: color boxLED: Colorful breathing lightsProduct size175*73.5*54MMPacking size: 20.5*8*6.5CM