JBL Pro Sound that is incredibly portable and has a stronger bass: Don't be fooled by its small size. The JBL Go 4 is a powerful musical instrument. Your friends will be amazed at how much excellent JBL Pro Sound can be produced from such a tiny speaker. Playtime Boost adds two hours to the maximum of seven hours of playtime. Don't worry about the little things, like battery charging. You can play for up to seven hours on a single charge with the JBL Go 4. To extend your battery life by up to two hours, tap Playtime Boost. Waterproof and dustproof: The JBL Go 4's IP67 waterproof and dustproof rating guarantees that it can function in practically any setting, including a picnic by the sea or a poolside party. Auracast multi-speaker connection: Desire even