The Anker Soundcore Mini 2 is a pocket-sized speaker with big sound. A customized 6W driver with built-in BassUp technology supplies sound that defies Soundcore Mini 2's compact size. Fill the room with full-bodied audio -- crisp, clear highs and deep, rich lows. IPX7 waterproof protectio. An advanced casing offers impenetrable protection against water, rain, dust, mud and more. Soundcore Mini 2 even withstands being submerged in up to 3.3 ft. of water for 30 minutes. Up to 15 hours of non-stop entertainment is powered by a high-performance Li-ion battery and Anker's superior power management technology. Soundtrack your car ride, beach party and even the ride home, all without running out of power. Wireless stereo pairing makes it easy to pair your speaker with a second Soundcore Mini 2 for stereo sound with greater spatial depth and even bigger volume. A sleek metal finish with non-slip rubber base is robust, yet lightweight. Small enough to fit in your coat pocket, it is the perfect musical companion. Bluetooth 4.2 ensures a strong, skip-free connection up to 66 ft. away, while the built-in microphone allows handsfree calls. Model: A3107Z11.