Description:Item type: Wireless Bluetooth SpeakerItem size: 19.5x3.4x6.7cmGross weight: 168gColor: Blue,Orange,Red,GreyBluetooth: 3.0Transmission range: up to 33ft (10meters)Audio Port: TF / USB / AUXSpeaker: Double Speakers 4Ω 3W diameter 40mmFM Frequency Range: 87.5-108MHzFrequency Response: 100Hz-16KHzCharging Interface: Micro-USBInput Voltage: DC 5V-500mAhBattery: 1800mAh Lithium BatteryPlayback Time: Up To 5 HoursCharging Time: 2.5-3.5 HoursMaterial: ABS PlasticBluetooth Connection:1.Switch On / Off Key2.Single Press “M” Key Until The Speaker Prompt“Bluetooth Mode”3.Use Your Device To Open The Bluetooth Function And Search.FM Function:1.Switch On / Off Key2.Single Press “M” Key Until The Speaker Prompt “FM Mode”3.Single Press “M” Key To Switch Channel.USB Flash Disk Function:1. Insert The USB Flash Disk And The Speaker Prompt "Play By USB Drive"2. The Speaker Will Search The File And Play Automatically.Package Included:1x Bluetooth 3.0 Speaker1x AUX Cable1x USB CablePlease contact us first when you have any problem,we will give you the best service and solve the problem ASAP.Thank you so much.