https://www.dfrobot.com/product-1448.html
This is an IOT board based on Arduino Leonardo integrated with a SIM808 chip which provides GSM/GPRS/GPS.
gsm gprsarduino leonardogpsiotboard
https://www.cnx-software.com/2012/07/25/16-euros-arduino-leonardo-board-is-now-available/
Arduino Leonardo is a new Arduino board with a 16 MHz Atmega32U4, 2.5KB RAM, 32 KB of Flash memory, 20 digital I/O, 12 analog inputs and 7 PWM outputs. In
arduino leonardoeurosboardavailablecnx
https://www.educba.com/arduino-leonardo-vs-uno/
Guide to Arduino Leonardo vs Uno. Here we also discuss the Arduino Leonardo vs Uno key differences with infographics and comparison table.
arduino leonardokey differencesvsuno