The Ccell Stylo Black battery is a versatile product designed for various devices that require power. With a voltage ( 2.4v , 2.8v , 3.2v ) and a chemical composition of Li-Ion, this coin cell/button battery is suitable for a range of applications in the sound and vision category. The inclusion of 3 different voltage settings provides flexibility in powering different devices, making it a reliable choice for users looking for a rechargeable battery solution. The Ccell brand ensures quality and performance in this essential power source.