Koss Porta Pro Wireless

The wireless version of one of the longest lasting and most recognizable on-ear headphones on the market, having been around for over 35 years. The 1.2-metre wire with L-shaped 3.5mm mini-jack connector has been replaced by a loop that connects two speakers and is in the working position on the user's neck. It houses a practical remote control with microphone (right) and battery pack (left).

Positioned as a product of the middle price category of the 2018 model year, intended for the widest possible range of consumers who want to purchase simple, lightweight and high-quality sounding wireless on-ear headphones with a microphone for voice communication in hands-free mode. The foldable design weighs only 79 g and, with a fully charged lithium polymer battery, shows good battery life (up to 12 hours).

To connect to a high-quality digital audio source, an energy-efficient bluetooth 4.1 interface is used with support for A2DP, AVRCP, HFP and HSP profiles and Hi-Res codec aptX. High-quality dynamic radiators reproduce an extended frequency range from 15 to 25,000 Hz, generating clear and detailed sound with a pronounced elastic bass. Headphones do not create excessive pressure on the head and are comfortable for prolonged wear.