: Primarily designed for desk phones via an RJ9 port. It can connect to a PC with the optional APU-75 adapter . Purchase Considerations When buying the
: Provides up to 7 hours of continuous talk time per charge. buy cs540
: At just 21 grams, it is one of the lightest wireless headsets on the market. It features a convertible wearing style, allowing it to be worn over-the-ear, over-the-head, or behind-the-head. : Primarily designed for desk phones via an RJ9 port