Feature:1. [Applicable Occasion] The radio headphone is special design for airports, racing cars, docks, mining and other noisy places, the headphones are rugged and easy to use.2. [Convenient to Use] PU coil plug connection design, stretching length up to 2.5m/8.2ft, suitable for different height requirements, sealing sponge earcase can be replaced, adjustable ear rod.3. [Applicable Group] The hearing protection headphones are suitable for car racing, dock, aerial work and other special places to use the communication of the staff.4. [High Toughness] U94 PTT part adopts high strength PTT, can continue to press 30,000 to 50,000 times. The wire adopts cold resistant PU tensile wire, with high flexibility and toughness.5. [Safe and Reliable] The U94 PTT comes with clips that can be attached to clothes or belts. Button activates PTT (push to talk) device. Communicating with others is safer and more convenient.How to Use:plug and playSpecification:Item Type: Radio HeadphoneMaterial: PU+ABSColour: BlackStretched Length: Approx. 2.5m/8.2ftApplicable: Suitable for UV-9R UV-9R PLUS UV-XR BF-9700Microphone SpecificationSensitivity: -44 ± 3dB at 1kHzRated Impedance: 680ΩProduct Frequency: 20HZ-160HZWorking Voltage: 1.5V-4.5VDirectional Function: Single Pointing, Noise CancellationSpeaker SpecificationTrumpet Size (mm): φ36mm/1.4inRated Input Power: 0.5WMaximum Output Power: 1WSensitivity: 100 ± 3dbTrumpet Impedance: 8ΩWire SpecificationsDurable Temperature: 60℃ -30 ℃ Package List:1 x U94 PTT1 xRadio HeadphoneNote:Manual measurement, please allow some error.