Item Features:1.Bluetooth 5.0 Technology, compatible with all Bluetooth-enabled devices, connect to your smartphone instantly Super sound quality2.High capacity rechargeable battery for playtime based on music volume.3.Support TF card (Not included)4.Light weight and portable, easy to carry and use in indoor and outdoor. Product Specifications:Material: ABS PlasticBluetooth Version: V5.0Audio port: TF / USB / AUXBattery: Built-in Rechargeable Lithium BatteryCharging Voltage: DC 5V / 500mAhFM Frequency Range: 87.5-108MHzFrequency response: 100Hz ~ 16000HzSpeaker: Double Speakers 4Ω 3W diameter 40mmPlay Time: Up to 6 hoursFunction: TF Card, FM Radio, U Disk (Not included)Support: FM Radio, Hands-free Call, TF Card, USB Disk, AUX InputDimensions: 20c.