Which OS are you running?
El Capitan 10.11.1 beta. Mac is MacBook Pro (15-inch, Early 2011). System Report says:
Apple Bluetooth Software Version: 4.4.2f1 16391
Hardware, Features, and Settings:
Name: MBP
Address: E4-CE-8F-02-22-41
Bluetooth Low Energy Supported: No
Handoff Supported: No
Instant Hot Spot Supported: No
Force Touch and haptic feedback work perfectly though so I'm not sure why they say you need Bluetooth 4.0.