Adafruit SPI FLASH Breakout with a W25Q16 – 16 Mbit / 2 MByte can be used for extra storage for your microcontroller projects: for files, images, fonts, audio clips, etc. It comes with level shifting so it can be used safely with 3V or 5V power and logic.
Features

Product Dimensions: 20.3mm x 17.7mm x 3.5mm
Product Weight: 1.4g

Resources

W25Q64JV Datasheet and technical documentation

Primary Guide: Adafruit SPI FLASH Breakouts