For Hytera PD680/X1p/PD660/PD600/AR685 HD01 Single Ear Walkie Talkie 7.1mm Headphone with U94 PTT Adapter - Brown •Professional headset: Tactical Bowman Elite II headset widely used by special forces,designed for active combat and high noise applications •Practical: Allow headset to be worn under electronic protection or ear defenders,such as for Sordin Supreme Pro •Good sound quality: Vented type ear pad enables peripheral hearing or talk-through audio from electronic hearing protection •Angle adjustable microphone: Offer a low-profile and vented ear-cup and a flexible microphone boom which is mounted •Comfortable wearing: Three adjustable suspension straps allow for a comfortable fit and high stability •U94 PTT adapter: U94 PTT,the buttons feel good,and the large PTT is easy to operate •High-quality U94 PTT part: The U94 PTT part adopts high-intensity PTT,which can be pressed continuously for 30,000 to 50,000 times •Durable wire: The wire is made of cold-resistant PU tensile wire,which has high flexibility and strong toughness •Specifications: •Frequency response: 150Hz-500Hz •Sensitivity: 46-60dB •Impedance: 8 Ohms Compatible with: •Hytera PD680 Package included: •1 x U94 PTT Headset Adapter •1 x Headset