Feature:Super Bass SpeakerBuilt-in lithium battery with displayColorful LED Flash 100% brand new and high qualityWith USB And micro SD/ TF card slot， you can play mp3 / mp4 format files in the USB Flash Disk /TF card Support A2DP， AVRCP， headset， handsfree profileWireless portable mini Bluetooth stereo speaker systemSaves you from the hassle of tangled wiresExpanded BXS (Bass Xpansion System) drives a fuller， richer low-end responseBuilt in rechargeable battery ， charged by computer via USB interfaceModular 'Buddy-jack' design: connect a row of Mini Speakers to get jaw-dropping audio performanceThis model of speaker supports any mobile device comes with Bluetooth function such as For IPHONE， For IPAD， Samsung Galaxy/Note/tablet， Laptop， Tablet PC， etcCompact and portable， convenient to carry and use it indoor or outdoor.Specification:Bluetooth Version: V2.1Working Range: Up to 10m (about 33 feet)Working Time: 2-4 hoursCharging Time: 1~2 hoursBattery Charging Voltage: 5V±0.5VBattery Capacity: 500mAhLoudspeaker Output: 40mm 2.6ohm 3WInput power: DC 5VFrequency Response: 60Hz-18KHzS/N: ≥96dbDistortion: ≤0.5Compatible with :All device with bluetooth function such as:For iPhone 3Gs 4 4s 5 5c 5sFor iPad 1 2 3 4 iPad miniFor iPod Touch 4 5 Nano 4 5 6 7For Galaxy S2 S3 S4 i9300 i9500 mini Galaxy Note I II N7100 Galaxy TabFor HTC One M7 SeriesFor Sony Xperia S ZFor Nokia Lumia 800 820 900 920 etc more Phone so on ...Package Includes:1x Bluetooth Speaker1x Audio and USB charging cable1x Retail box