Item Type: Mini BT SpeakerMaterial: ABS Plastic, ClothMain Function: BT, Memory Card, USB, FMBT Specification: BT 4.2Power Amplifier Specification: 3WBattery Specification: 300mAhPlayback Time: 2 HoursSound Channel Mode: MonoPlayback Format: MP3, WMA, WAVAmplifier Specifications: 3W x 1BT Distance: <10m/32.8ftExpansion Memory: 16GFrequency Response: 80Hz-20KHzSNR: 75dBCharging Parameters: 5V 0.3APackage List1 x Mini BT Speaker1 x Data Cable1Compact And Portable: Mini Bluetooth speaker, lightweight and simple, designed with a hand strap, convenient to carry, listen to music at any time. 2Clear Sound: Mini wireless speaker built in high power amplifier, providing clear and large volume playback, strong sound strength. 3Multi Function: Small subwoofer speaker with Memory Card, USB, FM function, to meet your needs of different scenes of use. 4Stable And Sensitive: Bluetooth speaker uses 4.2 chip to provide a fast and stable connection, low power consumption, suitable for indoor or outdoor use. 5Premium Materials: This portable speaker is made of premium ABS plastic, cloth materials, provide delicate feel and more fashionable appearance.