Bring more than music to the party with the Pulse 4 Portable Bluetooth Speaker from JBL. In addition to the 360° 20W speaker array, the Pulse 4 provides your guests with a high-resolution 360° LED light show. The LED lights respond to the music, but that can be adjusted via the JBL Connect App. The Pulse 4 has up to 12 hours of battery life for all-nighters, and is rated IPX7 for water resistance to splashes, letting you use it at the pool or beach. For an even bigger party, you can link the Pulse 4 to other PartyBoost-compatible speakers, including other Pulse 4 speakers. Shake to Sync Lights When another Pulse 4 speaker is around, simply hold your Pulse 4 to it and shake to sync both light shows together. JBL Connect App The JBL Connect App lets you control multiple aspects of the Pulse 4 to suit your needs. Use it to choose from a variety of light show themes, create your own, or turn off the music altogether and relax to ambient LED lights.