The Hang Tune Magnetic Speaker is a portable speaker system that allows you to enjoy your favorite music wherever you go. With its sleek black design and wireless connectivity, it is easy to take with you on the go. The speaker is not only waterproof but also has the unique feature of gripping any magnetic surface, making it versatile and convenient to use in various locations. Its model number 23046 adds a touch of sophistication to this must-have portable audio device. This has Super Start Batteries printed on speaker face.