CHARACTERISTICS: Rechargeable battery. 15-inch woofer. Handle and wheels USB MicroSD Bluetooth TWS Technology you can connect to other Wave 15 speakers and have stereo sound (TWS function is only available when a device via bluetooth is connected). LED Screen. Ultra bright led lights. MIC Input AUX line input (3.5 mm). Battery duration: 6 hours at a medium level. FM radio. Wired microphone included Frequency Response: 35Hz 20KHz. S / R ratio: > 80dB. Sensitivity: 90dB. DC 9V 2a power supply (Power supply not included). 2600mAh battery. Box dimensions: 67x45x36cm.