Bluetooth headphones are wireless headphones that only use radio waves for audio signals. Bluetooth devices are easier to connect and are compatible with most Bluetooth supporting devices. You will get the frequency pickup range from 30 feet to to 650 feet in the latest version of branded Bluetooth headphones.
Wireless headphones including wireless earphones with mic use both infrared (IR) and radio waves for audio signals. They work with only the devices from the brand manufacturing/selling them. Wireless headphones offer the pick up range up to 300 feet.