Type: TF card Size: 15mm*11mm*1mm Model: C6 standard version/C10 high-speed version/C10 good die version U3 C10 good die version U3: ultra-high-speed high-quality version, universal model, read and write speed (3.0) read 90MB/s, write 25MB/s, suitable for driving recorders, surveillance cameras, sports cameras, drones, mobile phones, electronic microscopes, children's cameras, smart watches, game consoles, voice recorders, MP3, MP4, card speakers, radios, video machines, headphones, elderly machines, learning machines, robots, navigation systems, car audio, portable scanners, etc.; U1: Can meet the needs of 1080p (Full HD) video recording, but may not perform well for high-resolution videos. U3: Suitable for 4K video recording, can better handle high-resolution videos, ensuring smooth recording and playback. C10 high-speed version: non-universal No., not suitable for video recording equipment, read and write speed (2.0) read 20MB/s, write 10MB/s, suitable for MP3, MP4, headphones, card speakers, radios, Buddhist chanting machines, video machines, children's cameras, smart watches, game consoles, voice recorders, low-end mobile phones, elderly phones, learning machines, early education robots, navigators, car audio, portable scanners, etc.; C6 general speed version: non-universal model, not suitable for video recording equipment, read and write speed (2.0) read 18MB/s, write 6MB/s, suitable for elderly phones, headphones, learning machines, card speakers, voice recorders, car audio, PM3, MP4, etc.; Package: 1*Flash card Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.