Anti-radiation Hollow Air Tube Stereo Ear Buds Earphones Stereo Hands-free Headset Headphones Built-in MIC with 3.5mm Jack Aircom A1 (Active White) - US Patent # 6453044 Anti-radiation Hollow Air Tube Stereo Ear Buds Earphones Stereo Hands-free Headset Headphones Built-in MIC with 3.5mm Jack Aircom A1 (Active White) AIRTUBE - A patented sound technology using an air-filled hollow tube to increase air space and sound development which produces more body and delivers a "Live" listening experience. MICRO EARBUDS - One of the smallest earbuds on the market due to the use of the airtube technology which puts the speaker in the sound chamber and not in the actual earbud. MIC/SWITCH - Built-in microphone with ON/OFF switch. 100% Customer Satisfaction. Fast Same-Day Shipping by 12:00 PM PDT. 12 Months Warranty.