The SD4/16GB is a Kingston memory card designed for use with cell phones, digital cameras, and other portable electronic devices. It has a capacity of 16 gigabytes, which is great for storing large amounts of data. This memory card is class 4 and offers read speeds of up to 4 MB/s and write speeds of up to 3 MB/s. It is also built with UHS-1 technology, which ensures fast and reliable performance. The SD4/16GB is shock-proof, temperature-proof, x-ray proof, and waterproof, so you can take it anywhere without worry.