Cooligg Wireless Bluetooth Speaker Mini Portable Stereo Super Bass

Features:     Speaker has a built in microphone so you can take calls on the speakerWireless, hands free, that's what you need to be with music everywhereWith micro SD TF card slot, you can play mp3/ mp4 format files in the TF cardSupport A2DP, AVRCP, headset, hands free profileExpanded BXS (Bass Expansion System) drives a fuller, richer low-end responseBuilt-in 500mA/3.7V rechargeable battery, charged by computer via USB interface specifications:Voltage: DC 5VOutput Power:3WSpeaker Unit: Phi 45MMDistortion Rate: 0.5%@ (1KHz)Frequency: 90Hz-20KHzTransmission Range: Up to 10 meters (without shelter)Battery Capacity: 500mAhContinuous Working: 3-5 hoursExtended Storage: 32GBEffective Distance: 10 metersPlay Format: WAV, MP3, WMAFormat: Support TF CardUnit size: 2.83*1.89inch (72*48mm)Weight: 172g(without package) Package includes :    1 x Mini Wireless speaker1 x Charging Cable1 x User Manual