Features and Specifications - 4" High-Efficiency SpeakerBuilt-in Bluetooth® 5.0 Compatible Allows Your Speaker to Work with Bluetooth® Enabled DevicesTrue Wireless Stereo (TWS) - Allows You to Connect 2 Speakers Via Bluetooth® with TWS Technology So they Can Play at the Same Time and You Can Double Your Audio OutputColorful LED Lights ShowMulti Connectivities - USB, Micro SD & AUX Inputs Allow You to Connect Your Non-Bluetooth®External Audio DevicesRechargeable Batteries (3.7V/1200Mah)FM Radio1 Mic InputDC In Power - 5V 1ASystem Type - 4" WoofersFrequency Response - 90Hz-20KHzS/N Ration - 60dBImpedance - 3 OhmRMS - 5W Lithium IonAccessories Included - ManualDimensions & Weight - Unit Dimensions (in) - 6.38 x 4.57 x 7.8Unit Weight (lbs) - 1.1Gift Box Dimensions (in) - 6.38 x 4.57 x 7.8Gift Box Weight (lbs) - 1.22UPC - 639131218048