This black USB drive, also known as the “Mosquito USB,” claims to be the world’s smallest USB-C flash drive at just 10.6×20×13.5 mm—roughly the size of two stacked 1-yuan coins—and weighs only 2.8 grams. Its plastic casing typically comes in black.

This miniature drive features an integrated die-cast metal shell with a matte sandblasted finish that resists fingerprints and scratches. Its capless sliding mechanism (similar to the Kioxia U365’s design) eliminates the hassle of losing caps. Some models incorporate a hidden keyring hole (like the Vector Bid USB drive), allowing it to be attached to a keychain with barely any bulk, eliminating the frustration of “carrying it but forgetting it.”

Capacities range from 1GB to 512GB: – 1-8GB compact models are ideal for storing bid documents or car audio files. – 128-512GB high-capacity models can hold thousands of RAW photos or dozens of hours of HD video.