180784 Anti UV radiation， clear tone quality and high fidelity. Convenient and durable to use. Professional and pleasing. Comfortable to wear. Name: Professional Outdoor Earphone Color: Black Port type: K2 port Dimension: about 190 x 170 x 87mm (Earphone) Specifications: 1. Pin size: Diameter/length: 3.5 mm pin length: about 14 mm 2.5 mm pin length: about 11 mm 2. Speaker Size(mm): Ф15mm Impedance: 32ohm±15% Sensitivity: 102±2dB Max input power: 50MW 3. Microphone Sensitivity: -58±2dB Suitable for walkie talkie of all Kenwood series 1 x Earphone Packed in PE bag