While the fabric that wraps the speaker may look quite similar to the previous model, it is actually now completely waterproof. IPX7 waterproof to be exact, meaning it can be submerged in 1 meter of water for 30 minutes, and it also shuts out dust, dirt, and sand. So you can take it to the beach with no problem. If you have another speaker and want to connect the Flip 4 to it, you can’t; the Flip series is not that expensive and I can’t imagine anyone buying it every time a new product comes out, but this time you can’t even connect it, which is a real shame. It is a lightweight and small Bluetooth speaker, so you can take it anywhere. It also comes with a removable carrying strap so you can clip it to your bag. Furthermore, it is IPX7 equivalent waterproof and can withstand some water damage. It’s better for small picnics with friends than boiling backyard parties, since it won’t be quite as loud as some other speakers on the market. The Connect+ button on the back of the speaker allows you to link it with up to 100 compatible JBL speakers. It’s hard to imagine a situation where you would take full advantage of this capability, but if a couple of friends also have the right JBL speakers, it’s certainly a handy feature. Two JBL Flip 4s can also be linked together to create stereo sound by playing the left and right channels individually. The Flip 4 can also be used as a speakerphone to take calls. The audio is very clear, and callers have reported that they could hear me clearly in relatively quiet environments.