Trendwoo Bluetooth Speaker Protable Dual-Driver Stereo Speakers with Subwoofer Wireless Outdoor Speaker Speakers with Subwoofer: Rugged and enduring design with the best bi-directional sound quality for its size achieved through 2*3W driver and passive radiator - listen to high fidelity music when you are out hiking, camping or partying in the wild Bluetooth Speaker Protable: Built-in MIC for handsfree speakerphone phone calls from smartphones and iPhones.Support hand-free calls. You can answer or hang up the phone calls, finish Google Talk, Skype and video chat, even if the device is not by your side. Outdoor Speaker: Suitable for outdoor activities with dastproof, shockproof & IPX-5 waterproof features. Hands-Free Design: It can be hung on the bicycle or screwed on the bicycle mount (bicycle mount is not included in the package). Universally Compatible: Suitable most Bluetooth-enabled devices. Such as iPhone6s plus 5S 5 4S and Android smartphones,Samsung Galaxy Phones and so on. Perfect for Outdoor Sports, Travel, Bicycle/Bike, Cycling, Climbing, Camping, Hiking, Running, Fishing Use.