Listen for ages with the JBL Charge 4 portable Bluetooth speaker, which offers up to 20 hours of playtime. That’s thanks to its built-in lithium-ion battery that boasts a whopping 7,500 mAh capacity, which you can recharge whenever you need. Plus, it has an integrated USB port that lets you charge your phone if it starts running low on juice. Conveniently, you can connect the JBL Charge 4 to up to two smartphones or tablets at one time. Simply use Bluetooth wireless connectivity to take turns playing your favorite songs. With an IPX7 waterproof rating, this is the right speaker to take with you to the beach or the pool. If you need to amp up your sound even more, simply connect it to another speaker that offers JBL Connect+. With a durable fabric and tough rubber exterior, this portable speaker is made to handle your everyday adventures.