The 10 pcs CR2032 Battery Holder offers a convenient and secure storage solution for your various electronic devices. This case can hold 1x 3V black coin cell battery, ensuring optimal performance and reducing the risk of battery leakage. The on-off switch allows for effortless access to the batteries while also preventing accidental activation. The black color matches with most devices, making it a versatile option for your needs. Additionally, the case is designed with a wire lead for easy removal and insertion of batteries, and it comes with a box to keep everything tidy. Overall, this CR2032 Battery Holder is a reliable and efficient addition to your electronic device storage solutions.