The USB blocker is the simple and easy solution to keeping your data safe from unwanted data breach. This device will always keep your smart phone safe, no matter where you charge, perfect for airports and public transportation. Keeping your device safe from intrusion is our promise. Nicely packaged and includes logo and shipping. Complies with CE, ISO 9001, RoHS. 4.2cm L x 1.9cm W x 1cm H