The medium-sized circular key-shaped USB drive features a compact design, approximately 20% smaller than conventional keys. Its core shape resembles a circular key, formed through an integrated metal die-casting process. The main body is crafted from high-strength aluminum alloy (or stainless steel), with a nano-level electroplated (or brushed) finish. This process ensures resistance to fingerprint residue and abrasion. It comes with a standard keyring for attaching to your keys, enabling convenient portability.

This USB flash drive supports multiple capacity configurations ranging from 8GB to 64GB, accommodating diverse data storage needs such as office documents and high-definition multimedia files. It features dual-protocol compatibility with USB 2.0/USB 3.0 interfaces (varies by specific model). The USB 3.0 version achieves sequential read speeds of 80-120MB/s and sequential write speeds of 20-40MB/s, enabling efficient high-speed transfer of large files like CAD engineering drawings and 4K video clips.

In professional settings, this USB drive is widely used for industrial field data acquisition (such as PLC program backup) and vehicle diagnostic systems (OBD operational data storage). Its metal surface supports customization processes like laser etching and UV printing, allowing businesses to add their logos and transform it into a cost-effective promotional item for sustained brand exposure.