Secure, poweronly USB charging: our USB data blockers strictly allow power connectivity, delivering secure, uninterrupted charging while preventing any data transfer. This helps protect sensitive information when charging in public spaces. Builtin smart charging chip: the data blockers include a smart charging chip that can reach up to 550V / 15A, enabling efficient charging within the specified voltage/current range. Data protection and privacy: designed to prevent data leakage and spyware while charging, blocking syncing functions to eliminate hacking concerns for securityconscious users. Portable, practical design: compact and lightweight, these blockers fit easily into a pocket or bag and can be attached to a keychain. The transparent casing provides a visually appealing, seethrough look. Use scenarios: While traveling in airports, hotels, and other public charging areas, to keep data secure during charging. At cafes, libraries, and shared charging stations where data risks exist. In everyday commutes or office environments where charging is needed on the go, ensuring safe poweronly charging.