This case is designed to perfectly fit Sony WM-F100, WM-F101, WM-F100II, WM-F100III, and WM-F103 cassette players. It is crafted from high-quality materials to provide superior protection against scratches, dust, and other elements that can damage your device. Whether you are on the go or just want to keep your cassette player safe, this case is the perfect accessory. With its sleek design and durable construction, it offers a stylish and practical solution to safeguard your device. So why wait? Get yours today and enjoy the peace of mind that comes with knowing your cassette player is protected!