The Midland K10 Bluetooth Kit is a pilot intercom uniquely designed to answer phone calls hands-free, listen to music, or follow instructions from your GPS. It has an ultra-compact design and is universally compatible with jet helmets. It uses Bluetooth 4.0 technology and has XS earphones with 7mm thickness and DSP Noise Killer noise cancellation technology with 8 hours of battery life with 2 hours of charging.