Sit poolside on the boat and more with this Bluetooth speaker. IPX4 Rated water resistant is safe by the water. TWS function - stereo sound using another compatible speaker. Optimized for voice assistant control. Three different RGB lighting modes. Hands-free mic supports calls. Play audio with FM radio or USB support. Line-in function plays from other audio devices. Speaker size: 2 x 2". Rechargeable 3.7V 1500mAh battery. Frequency response: 80Hz-20kHz. Includes USB charging cable and Audio cable. Dimensions: 10" x 3.4" x 4.3".