Bluck Flash Drives: 20-piece set including 10 x 16GB and 10 x 4GB USB drives with 20 detachable lanyards. USB thumb drives with flexible storage and color options. Ideal for business needs, events, giveaways, or personal use. These drives help organize your digital life and support corporate projects. Durable and portable: Pocket sized 2.27 inches by 0.75 inches. Features a 360-degree metal swivel cap that safeguards the USB port and a rugged aluminum casing. Detachable lanyard attaches to your key chain or bag to prevent loss and ease carrying. Zero setup convenience: Plug and play USB drives. No software required. Instantly usable on any device. Universal compatibility with Windows XP, Vista, 7, 8, 10 and 11. USB 2.0 drives are backward compatible with 1.1 ports, suitable for older laptops and car stereos. LED indicator: End of the drive includes an LED indicator that lights when plugged in and blinks during read and write activities. Do not remove the drive while it is active to protect data integrity. Use scenarios: Ideal for corporate projects and events, and suitable for giveaways. Also practical for personal file backup, media storage, and travel.