Name: D-Shape Earphone Color: BlackPort type: K2 portMaterial: PU Dimension: about 156 x 117 x 22mm (With package)Specifications:1. Pin size:Diameter/length:3.5 mm pin length: about 14 mm2.5 mm pin length: about 11 mm2. SpeakerSize(mm): §¶15mmImpedance: 32ohm¡À15%Sensitivity: 102¡À2dBMax input power: 50MW3. Microphone Sensitivity: -58¡À2dBSuitable for walkie talkie of all Kenwood seriesLow noise， clear tone quality and high fidelity.Convenient and durable to use.Professional and pleasing.Comfortable to wear. 1 x EarphonePacked in PE bag