Coocheer Wireless Bluetooth Speaker - Portable Cell Phone Speakers with HD Sound and Bass, Compatible with iPhones, iPads, Androids, Samsung and all Phones, Tablets (Black 2) The fashion designed Bluetooth speaker can offer you endless enjoyment when you are traveling outside. Bluetooth function makes listening music wirelessly. With the Aluminum alloy hook, you can hang this Speaker on the mountaineering bag or other places conveniently. Built-in MIC, you can pick up a call by this Speaker in car, at home or office conveniently. After the Speaker is on and without any operation for 10 minutes, it will shut down automatically.