Color: black, pink, red, woodShell material: PlasticInterface type: USBBluetooth protocol :4.0Effective distance: 10 mExtended storage: 32GBOperation mode: press the buttonSpeaker adjustment mode: knobPlay format: MP3Supported format :TF cardBattery capacity: 1200mAhBattery type: Polymer lithium batteryCharging requirements: DC 5V/1A-2AOutput power :5WFrequency response range: 100HZ-20khzThe number of speakers: 1SNR: ≥ 70dBFunction: card, the radioProduct size: 21*10*9.8cm