Interactive Sound Function: Each click will emit a unique sound, providing an interesting auditory experience during the usage process. Colorful LED: Activates colorful lights simultaneously with the sound effect, providing support for multi-sensory interaction during the operation process. Tactile Click Mechanism: Offers a satisfying click similar to pressing keys and a smooth texture, suitable for a sensory experience that focuses on the hands. Portable Keychain Design: Compact size (approximately 2.7*2.7*6.7 cm/1.06*1.06*2.64 inches), with a snap-on attachment, convenient for carrying around, can be used as a pendant on a bag or a pocket accessory. Rechargeable: Equipped with a USB-C charging interface (not including the charging cable), with multiple styles available for selection.