HIGH-QUALITY SOUND – 8W powered (4x2) 360° degree surround sound, extremely loud and clear high quality sound with plenty of bass from a compact lightweight speaker. | VERSATILE – Mount to a bike, boat, backpack, or folding chair! Comes with all accessories and tools needed; a backpack hook loop and bicycle mounting kit. | SUPER DURABLE – Water-resistant (IPX4), shock-proof, dust-proof, and stain-proof design. Excellent build quality to survive extreme conditions. Perfect for hiking, cycling, fishing, beach trips, and relaxing by the pool. | ULTRA PORTABLE – Sized to fit perfectly in your palm. Our modest 10.6 oz mini-speaker provides 15 hours of long lasting play-time. Strong, stable Bluetooth 4.0 connection for up to 100 feet of range. | MULTI-FUNCTIONAL SPEAKER – Connects easily with wireless Bluetooth 4.0, Micro SD Card Slot, FM Radio, or through the AUX 3.5mm audio port. With your mobile device connected, you can even use the built-in microphone to make and recieve phone calls! Using the iFree controller, this speaker works perfectly as a very audible bike horn!