With lanyard hole The metal case of the USB flash drive is designed with a lanyard hole and comes with a corresponding number of lanyards. It can be easily attached to a keychain or lanyard for carrying anywhere. A+ Grade Chip Our A+ Grade flash chips ensure data security and performance reliability, and is double tested by our QC department before shipping, durable and never have to worry about losing data. Customize your logo We offer custom color printing services that can be designed according to your provided patterns. Just let us know your needs and our team will provide you with professional services! Brand AreTop Dimension 2.16x 0.75x 0.41 inch Durability 50,000 times read & write Operating Temperatures 32º F to 140º F (0º C to 60º C) Storage Temperatures -4º F to 185º F (-20º C to 85º C) Chip Grade A, original brand flash memory chip Interface USB 2.0, backwards compatible to USB 1.1 Speed Write Speed: 5 MB/S-7 MB/S, Read Speed: 12 MB/S-20 MB/S Default Format FAT32 (could be formatted to FAT | exFAT | NTFS ) Capacity 4GB = approximately 3.7-3.9GB (actual capacity) Note About 90%--92% of listed capacity (due to different algorithms between computer and manufactures) 2GB Flash Drive 10 Pack 1GB Flash Drive 20 Pack 16GB Flash Drive 10 Pack 2-in 1 USB C Flash Drive 64GB USB 3.0 Flash Drive with USB C Adapter Buying Options Buying Options Buying Options Buying Options Buying Options Customer Reviews 4.6 out of 5 stars 4,570 4.5 out of 5 stars 2,031 4.5 out of 5 stars 117 4.6 out of 5 stars 67 — Price $18.59$18.59 $29.74$29.74 $21.78$21.78 $18.59$18.59 — no data Connector Type USB A USB A USB A USB C and USB A USB A with a USB C adapter Keyring Hole ✓ ✓ ✓ ✓ ✓ Interface USB 2.0 USB 2.0 USB 2.0 USB 2.0 USB 3.0 Read Speed 12 - 20 MB/s 12 - 20 MB/s 12 - 20 MB/s 12 - 20 MB/s 90 - 100MB/s Write Speed 5 - 7 MB/s 5 - 8 MB/s 5 - 8 MB/s 5 - 8 MB/s 30-40MB/s Multiple packs 10/20/50/100PCS 10/20/50/100PCS 10/20/50/100PCS 5PCS 1PCS