Beautiful Bluetooth Wireless SpeakerDOSS Bluetooth speaker has a beautiful appearance Special FeaturesYou can pick up the phone Bluetooth 2.1 + EDR TF card playback And hands-free Bluetooth The iPad, iPhone, iPod Touch, MacBook or many other via Bluetooth wireless play and control music. Use the slider button to pick up the phone with the device. USB power and stereo input Integrated USB power port with a standard USB power and a 3.5mm auxiliary input can be connected to thousands of devices. Clear, crisp sound. A full-range drivers and a passive radiator bass boost NFC Charging6 hours Built-in rechargeable lithium-ion battery Power Specification :Model Number: DS-1189 Rated Power: PO=1.5W Frequency Range: 80HZ-15KHZ Distortion: THDSNR: S/N³50DB Built-in Battery Capacity: 3.7V/500MAH Louder speaker set: 2 Inch