Hey guys, hope you’re well. Bluetooth is a technology that allows devices to exchange data within a short amount of distance from each other, wirelessly. The idea with Bluetooth was to find a wireless method for devices to communicate with one another, so that the RS-232 standard could be replaced, and the serial ports could be removed from devices. It’s been around for over 20 years and is now on almost every mobile and stationary piece of tech you own. If you’re thinking of buying a product which supports Bluetooth, but you’re not sure what version of Bluetooth you need, this video is for you. Timestamps: Intro: 00:00 4.0: 00:47 4.1: 01:35 4.2: 02:21 5.0: 03:03 5.1: 04:00 5.2: 04:42