Bluetooth is a wireless connectivity tool that allows you to "pair" your devices so that they can interact with each other. For example, you can pair a headset with most smartphones, allowing you to talk without touching your phone. You can pair a gaming controller to a computer or console so you don't have to worry about the cord. You can send music to a Bluetooth-enabled speaker from your smartphone or laptop without having to connect them, or set up a home theater system without running speaker wire everywhere.  Bluetooth has a maximum range of about 30 feet. Bluetooth transfer speeds top out at about 24 Mbps. Bluetooth has been around for a long time (about 20 years), and is the market leader in wireless connectivity. Chances are that your wireless device comes with Bluetooth support. The big exception to this is desktop computers. While nearly all laptops will have Bluetooth built-in, most desktops do not include it. You will need to purchase a Bluetooth dongle and enable it if you want to connect your desktop computer to Bluetooth devices.  Many modern cars now have Bluetooth capabilities, allowing you to pair your phone while you are driving. Virtually every smartphone is able to pair with Bluetooth devices. Many newer printers are Bluetooth-capable, and can print wirelessly across the room. Every Bluetooth device has either single or multiple functionalities. For example, some cell phones may only allow you to use Bluetooth for making phone calls; whereas other cell phones may also allow you to transfer files to and from other cell phones. Every Bluetooth device has slightly different functionality. Review the manuals or consult with the manufacturers for your electronic devices to determine the ways in which you can use their Bluetooth technology. In order to use Bluetooth technology, you must connect your devices to one another wirelessly, also known as "pairing". The pairing process varies from device to device, but generally you will have one device that is "listening", and then the secondary...

TL;DR in Indonesian:
Pahami apa saja yang bisa dilakukan Bluetooth. Periksa apakah perangkat anda mendukung Bluetooth. Kenali kemampuan perangkat Bluetooth anda. Lakukan "pairing" pada perangkat Bluetooth.