Get the EDM festival experience, anywhere! Hold an EDM party anywhere, with EXTRA BASS 1 beats from the GTK-XB60. Built-in party lights complete the club atmosphere, and the rechargeable battery lets you play music even without mains power. Got no mains electricity? The built-in rechargeable battery powers your party for 14 hours with the speaker lights off, and the volume turned to level 17. Even at full volume with EXTRA BASS 1 and lighting on, you can party for 3 hours.3 If you re running low, just activate stamina mode to make your battery last longer (up to 4.5 hrs4). Wireless connectivity, Create a quick BLUETOOTH connection with NFC One-touch, or stream from your playback device over Wi-Fi. Lights straight from the club, Turn up the excitement with the built-in lights. A bright strobe lights up the dancefloor, white LEDs move with the music, and a multi-coloured lighting strip around the edge of the speaker creates an authentic club feel. Want to boost your volume? Connect up to 10 compatible speakers with Wireless Party Chain for even more audio power and an exciting party atmosphere with synchronised lights. It's all done with Bluetooth technology, so you don't need to use any connecting cables.