the music that powers your party feels huge

Power supply: 5

You won't have to cut your afternoon jog short just because of a little rain

Plug into your laptop or other audio device using the Boombox 4’s USB-C port* to enjoy lossless audio playback

Up to 76 hours of battery life means you can go a week between charges

JBL Battery 400 Father's Day 2024 Set 1 the music that powers yourAdd to Cart General Features Whats in the box Key Specifications Reviews General Features A great host always has a spare battery Keep the party going twice as long by having a spare JBL Battery 400 on hand. Just insert it into the battery slot in the back of your JBL PartyBox Stage 320 when the first one loses its charge. Each battery has enough power for up to 18 hours of playtime, which means you could keep the party going for up to 36 hours.