Volkano Samson Series Dual 6.5-inch BT Speaker VK-3901-65Volkano Samson Series Dual 6. 5 inch Speaker VK 3901 65 Volkano Volkano Samson Series Dual 6. 5" Speaker, Mic Input with echo, LED light effects, Aux, SD card, USB Input, FM Radio, Treble and Bass controls, Built In Li Ion Battery, Bluetooth version 5, 4 400 mAh Battery capacity, 5 hours charging time, 4 9 hours playtime, 50 W RMS total Power Output Features: Mic Input with Echo LED Light Effects Aux, SD Card and USB Inputs FM Radio Treble and Bass