I bought both 128GB 3.0 and 32GB 2.0. Both initially had problems with malfunctions. I have a 128GB 3.0 drive for essential work related stuff and a 32GB 2.0 drive to see if they are truly waterproof. I put a film on 32GB 2.0 and dropped it in a glass of water. I let it fully submerge to the bottom for a full minute. Then I swung it around and twirled it for another minute while it was underwater. I've also opened and closed the latch several times under water. After a thorough soak, I dried it and let it sit for two hours. After that I connected it to my desktop and was able to read and play the movie stored on it. It worked for me, but I am in no way responsible for damaging someone else's flash drive. I only did this as a test, but no smart person should ever intentionally put their USB stick in water for any other reason. There were some issues connecting it to my desktop the first time, but I haven't had any issues since. Most of these waterproof/keychain sticks are fake/scams and I did a lot of research before deciding on this one and I'm happy with it. However, if you are serious about storing your data and keeping it safe, just use an internal or, failing that, an external SSD. But it's a good and reliable way to store your data on your keys.
Samsung BAR Plus 128GB - High-Speed USB 3.1 Flash Drive Titan Gray (MUF-128BE4/AM)
67 Review
Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
69 Review
Kingston DataTraveler SE9 32GB USB 2.0 Flash Drive for Reliable Data Storage (DTSE9H/32GBZ)
69 Review
Samsung BAR Plus 128GB USB 3.1 Flash Drive - 400MB/s - Champagne Silver (MUF-128BE3/AM)
65 Review
2 TB External HDD Western Digital WD Elements Portable (WDBU), USB 3.0, black
84 Review
8TB Seagate Backup Plus Hub Desktop Hard Drive with Data Recovery Services
56 Review
2 TB External HDD ADATA DashDrive Durable HD650, USB 3.2 Gen 1, Blue
55 Review
Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
99 Review