YEVO 1 delivers a perfectly synchronized and wire-free HD sound experience. The YEVO 1 connects to your device with 4.1 Bluetooth and pairs with a technology called Near-Field Magnetic Induction, or NFMI. It’s been previously used mostly in hearing aids, uses a low-power magnetic field to transmit data, draws far less power than Bluetooth and sends music more secure. The YEVO 1 connects directly to your ears at a distance of up to 66 feet from any Bluetooth enabled device/phone/tablet.