150ft max signal reception
900MHz RF wireless transmission, FM stereo sound
Induction charging: not direct pin contact
Volume control on ear piece, auto power On/Off
Charging time approx 16H; Battery life up to 15H, AC Adaptor (DC 12V) included
Earpiece--Earpiece Controls--Volume::Earpiece--Driver Type--Neodymium::Earpiece--Driver Size--1.57"::Physical Characteristics--Form Factor--Ear-cup
Limited warranty 3 months for parts and 3 months for labor.