Consider the Big Blue Party Indoor-Outdoor Speaker as that one speaker your pool parties definitely can’t do without. This speaker is wireless, water-resistant and highly powerful with 4 full range speaker drivers delivering 360-degree sound. You can take it at the beach or to the nearest pool and play those favorite tracks for everyone around. It can connect to any Bluetooth device with a range of 33 feet and includes a rechargeable battery that can play for up to 4.5 hours per charge. Now that’s what you call a true party must have you can’t leave behind whenever you decide to have some fun with friends.