A new generation of portable speakers has been unleashed!With up to 8 hours of playback time and true wireless technology, the VolkanoX Adder series is taking your listening experience to a whole new level. Connect two VolkanoX Adder series speakers together to experience True Stereo Sound. Listen to music via Aux or SD card inputs or simply enjoy FM radio. This durable portable speaker packs up to 85 dB and is IP x 5 Water resistant. Complete with a speakerphone and 5V/1A Powerbank output, this Bluetooth Speaker is the perfect companion for outdoor adventures.