Sporting dual 4", 15W drivers and a passive subwoofer, the ECOXGEAR EcoRoam 100 Portable Bluetooth Speaker puts massive sound in a surprisingly compact size. This ECOXGEAR speaker adds party lights with multiple lighting modes to make it the centerpiece of any outdoor gathering, while wide-ranging functionality lets you get the most out of this portable speaker and your occasions. Bluetooth wireless connectivity lets you stream audio from any compatible, connected device, while aux-in and a built-in SD card reader allow countless more audio attachment possibilities. TWS wireless pairing lets you connect other EcoRoam 100 speakers (not included) to pump up the audio even further. A built-in speakerphone allows handsfree phone use, the IPX5 water-resistant rating ensures this portable wireless speaker can withstand spray and splash. Runs up to 15 hours on the whopping 4,000mAh rechargeable 7.4V battery. 15.2"L x 5"W x 10"H.Manufacturer model #: GDI-EXRMX101. Dual 4", 15W drivers Large passive subwoofer Party lights with multiple modes Bluetooth Aux-in SD card reader TWS wireless pairing Built-in speakerphone Large carry handle IPX5 water-resistant Runs up to 15 hours on 4,000mAh rechargeable battery