Business Backpack with USB Charger Port, Expandable, Water Resistant, Travel, Laptop, Work Computer Up to 17″ – Black

Enterface: ¢3.5 fourth-level plugChannel: StereoWearing style: semi-in-ear typeLength: 120cm 5cm5.1Speaker size: medium 14mmInput impedance: 32 Shi 15%0Input power: Rated 3mW/Max 5mWSensitivity: 102 soil 3dBMicrophone directionality: all pointing Omni-directionlOutput impedance: Max2.2KQSignal-to-noise ratio: ≥-50dBConnecter: $3.5 four-stage plugSound channel: stereoWearing style: half in-earLength: 120cm 5cm5.1Speaker size: Ф14mmInput impedance: 32 15%0Input power: Rated 3mW/Max 5mWSensitivity: 102÷3 dBMicrophone Directivity: Omni-directionlOutput Impedance: Max2.2KQSignal-to-noise ratio: ≥-50dB