Top features: - EXTRA BASS technology for deep, punchy bass - Long battery life will keep you partying through the night - LED lighting for creating a party atmosphere - Wireless streaming with Bluetooth & NFC EXTRA BASSKick start your party with the Sony High Power GTK-XB90 Bluetooth Wireless Speaker. With an impressive power output of up to 180 W RMS, you can further enhance your music with deep, punchy bass by hitting the EXTRA BASS button.Long battery lifeKeep the GTKXB90 plugged into the mains for optimum sound output, or if you're taking the party outdoors or to another room, you can continue to party into the night thanks to the impressive 16 hour battery life.LED lightningInstantly create a party atmosphere with line, strobe, and speaker lighting that changes colour and syncs with the beat.Wireless streamingSteam playlists from your smartphone, tablet, or PC with wireless Bluetooth technology on the XB90. It's simple to get setup with one touch listening via NFC. With wireless Party Chain, you can connect up to 10 EXTRA BASS (2017 models) wireless party speakers together for synchronised sound and lighting.