Waterproof Bluetooth Speaker, Alpatronix AX320 Ultra-Portable Wireless Shockproof Speaker with Built-in Mic, Passive Subwoofer, Volume/Playback Controls for Smartphones, Tablets & Computers - Black HEAVY-DUTY PROTECTION: Rubberized and impact-resistant exterior is sealed and designed to ensure waterproof, shockproof and dustproof protection against all elements and environments (shower, beach, pool, rain). Suitable for the toughest outdoor activities in the harshest environments including hiking, cycling, camping and mountain climbing. LATEST BLUETOOTH 4.0 TECHNOLOGY: Crystal clear, stutter-free wireless music streaming with enhanced precision bass. Quickly pairs in seconds with a wireless range of up to 30 ft. Supports A2DP and extremely portable, packing 5 watts of exceptional sound for its small size. VERSATILE FEATURES: Built-in microphone offers hands-free function to conveniently answer phone calls straight from the speaker while connected to your smartphone. Playback controls give you full control of your smartphone straight from the speaker allowing you to adjust the volume (+/-), skip back/forward, pause/play music tracks. QUICK CHARGING: Fast rechargeable battery can last up to 6 full hours of playback time (at 70% of max volume) allowing you to enjoy your favorite music, shows or podcasts while in the shower, working outdoors, cooking or at the beach with friends. Aux cable is included to connect directly to your device to save power and enjoy for countless more hours. 100% SATISFACTION GUARANTEED: All Alpatronix products come with a 1-year limited warranty and our 100% money back guarantee. Shop with confidence! Don't like it? Simply return it, hassle free.