Feature:
Support USB version 2.0
Support Android Mobile Phone TYPE-C interface
Hot Plug & Play
Durable solid-state storage
No external power is required 4.5V ~ 5.5V from USB port
Compatible with USB 1.1/2.0
Operating Temp: -10 to +55Deg.C
Storage Temp: -20 to +55Deg.C
Life:>1 million times
Excellent USB Memory stick in excellent condition

About capacity:
4GB = approximately 3.6GB-3.8GB
8GB = approximately 7.4GB-7.6GB
16GB = approximately 14.4GB-14.8GB
32GB = approximately 28.5GB-30GB
64GB = approximately 58.5GB-60GB
128GB = approximately 110GB-124GB

Vendors are using Flash memory decimal arithmetic: 1 MB = 1000KB, 1G = 1000 MB
Calculated, operating system with binary arithmetic: 1 MB = 1024KB, 1 GB = 1024 MB;
So there are some differences between display capacity and nominal capacity of flash memory products