Does iMac Have Bluetooth?
Yes, the iMac has Bluetooth.
Each iMac comes installed with AirPort Extreme 802.11n Wi-Fi wireless networking, Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology, and 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector).
Bluetooth is a wireless connection that lets you exchange data over short distances. That works well for integrating your iMac with other devices.