This key is tiny and has a recess for hanging. It measures 22.4 x 12.2 x 6 mm and weighs 3.3 grams. a lovely golden color, you can hang it from a necklace or key chain. I tried it, I took the documents 310 MB approximately 10 minutes. For pictures 93 MB of records is instant. Also designed for video and music, it is presented as lasting and waterproof. She goes completely into the USB port and does not heat.