POWERFUL BASS EFFECTS AND CLEAR CALLS: With deep bass and clear highs, it produces a surprisingly loud Bluetooth speaker. With its built in microphone, you can take calls remotely and clearly. Uses 3W output.<br> EXCELLENT LISTENING EXPERIENCE: When you connect 2 F012 wireless Bluetooth speakers through 1 device at the same time, the double shock surround sound can let you enjoy the stereo sound enjoyment in 360.<br> IP67 WATERPROOF: Dust and water resistant and scratch resistant, high quality silicone surface. You can enjoy beautiful music while bathing in the bathroom or having an outdoor pool party with friends.<br> WIDELY USED: You can take calls conveniently with this small Bluetooth speaker. It's easy to take with you, perfect for parties, travel, hiking, camping and outdoor activities.<br> HIGH COMPATIBILITY: Advanced Bluetooth 5.0 wireless technology, forward/backward compatible with all Bluetooth enabled media player devices such as smartphones, tablets, laptops, desktops, etc. Support FM radio function.Frequency Response Range: 60Hz-15KHz.