What type of wireless technology is used in the NEW SpeechMike Air?

Question: What type of wireless technology is used in the NEW SpeechMike Air?
During product design, Wireless USB, WLAN, RF, WiFi & Bluetooth were all considered. Philips decided to go with Bluetooth 2.0 & 2.1.
They decided to go with Bluetooth for the followings reasons:

• Proven standard since > 10 years
• Approvals for CE, FCC, IC
• Tested highest connection reliability within the specified range
• Low power consumption
• Acceptable pricing
• Sufficient data transfer rate
• Highest security through encryption
• Hidden mode

Verification Source: Rob Johnson, Philips Product Manager