Function: anti-drop, call function, dustproof, voice prompt, card insertionType: bluetooth speakerConnection method: Bluetooth connectionInterface type: USBFrequency response range: 50Hz-20HzOutput power: 3WSignal-to-noise ratio: 75dBPower supply mode: built-in lithium batteryChannel: 1Playing time: 10 hoursExtended storage: not supportedNumber of speakers: 1Effective distance: 10 metersOperation mode: buttonApplicable people: generalDisplay: nonePlayback format: WAV, MP3, APE, WMA, FLCShell material: ABS+PPSupported format: TF cardSpeaker adjustment method: buttonBox material: ABSAppearance size: 122mm*95mmPower supply: USBBattery capacity: 2000mAHBluetooth protocol: 4.0Input voltage: 5V/0.5A Frequency range: 50Hz-20KHzStandard specification: V2.1+EDR Signal-to-noise ratio of the whole machine: 75dBLighting power: 2.4W Distortion: less than 0.5%Touch dimming: support Audio 3.5 interface: support (can link computer and mobile phone without Bluetooth device)Long-lasting lighting: 10 hours Touch light: Support three-speed white light/colorful light (long touch to switch colorful)Lighting: RGB+white light Main material: ABS/PP high temperature flame retardant material