Enjoy high-definition stereo sound on the go with the Sentry Bluetooth Speaker with Mic. This portable speaker features a built-in wireless microphone for hands-free calling. With a driver diameter of 50mm and an amplifier effective output of 1000mW, this speaker delivers impressive sound quality. The lightweight design makes it easy to take anywhere, and the long 25-hour continuous operating time ensures you can enjoy your music all day long. The speaker also includes a USB and 3.5mm AUX input for versatile connectivity options.