HP EliteBook 650 G9 (5Y3U5EA) NEW Intel Core i7 12Gen, 8GB DDR4, 512 SSD, Enterprise Business Class Laptop – Silver / Upgradable Ram

Frequency Response: 20–20KHzSpeaker size: 50mmSpeaker Sensitivity: 119=3dB (S.P.L/1KHz)Maximum power: 50mWRated Power: 30mWMicrophone Type: Omni-directionalMicrophone specification: 06.0X5.0MMMicrophone Sensitivity: -38 ‡3dB (0dB = 1V/PA)Microphone frequency response: 100 ~ 10K HzTransmission interface: USB (nickel-plated)Wire length: 2.0m = 10mmHeadphone Weight: 325g 10gDimensions: 200*190*110mmExecution standard:GB 7000.1-2015, GB7000.204-2008