Create an animated lesson
On requestThis article is free to read. Creating a lesson uses your daily or stored credits; review the language and settings before starting.
How does Bluetooth work?
Quick answer
Bluetooth connects devices wirelessly over short distances using low-power radio waves. Two devices 'pair', agree on a secure connection, and then exchange data — like audio to your earbuds — over the 2. 4 GHz radio band. It uses short-range radio waves around 2.4 GHz.
Step by step
- It uses short-range radio waves around 2.4 GHz.
- Devices 'pair' once, then reconnect automatically when nearby.
- It's designed for low power, so it suits earbuds, watches, and keyboards.
- Range is short (about 10 meters), trading distance for efficiency.
People also ask
How do Bluetooth devices connect?
They pair by exchanging keys once, then automatically reconnect over short-range radio when nearby.
What's the range of Bluetooth?
Typically around 10 meters, though it varies by device class and obstacles.
Why does Bluetooth use less power than Wi-Fi?
It's designed for short range and small amounts of data, so it can run on tiny batteries.
Part of the guide: How the Internet Works →