Power supply: built-in lithium batteryFunction: Call function card voice promptsConnection: Bluetooth connectivityColor Classification: Rose Red Blue WhiteEnclosure Type:Output Power: 3VFrequency response: 90Hz-20KHZDistortion: <0.5%Charging voltage: 5V + -0.5VProduct list: a battery， a charging cable， manual 1External replaceable lithium battery life of wireless，Configuring BL_5C can easily replace the battery， safe， long life， wide versatility， built-in battery playback time is 2-2.5 lost Bluetooth speakerControl large cavity acoustic structure， full-range speaker + bass diaphragm， charging， Bluetooth， radio， card， computer speakers， there are three status LEDs， the difference is not the same patternGreen light for Bluetooth status， rapid blinking in the search for Bluetooth for pairing， the blue lights for the radio / card / computer speakers state， according to the tone judgment. Red charging indicator， charging a long red light， full of offLanyard antenna beautiful and easy to carry， but also enhance the radio signal， listen to the radio more convenient， a key function， volume， song adjustment more convenient，