Dome-Shaped Bank Card Holder Keychain Dimensions: • Diameter: 3 cm • Height: 1.8 cm Design Features: • Dome Shape: The holder has a smooth, dome-shaped exterior. • Top and Bottom Parts: The holder consists of two parts: a top part and a bottom part. The top part can be separated from the bottom part by screwing it loose. • Separation Height: The bottom part is 3 mm high. • Card Slot: Inside the bottom part, there is a slot designed to hold a standard SIM card-sized bank card or phone card. The card can be removed using a pin through a pinhole. • Additional Storage: The bottom part also includes an empty space to store smaller items such as SIM cards, memory cards, or pills.