*Before Use Please Charge The Speaker Full * | Size: 50*33mm | Bluetooth Compliant: V5.0 | Battery: 300mAh | Playing Time: Up to 2.5 Hours | Frequency Response: 20Hz-20KHz | Power: 3W | Power Supply: DC-5V(USB) | Weight: 70g | Battery Charge Time: 2 Hours | Loudspeaker Output: 4W |