Laptop HP ProBook 450 G10 Notebook Intel® Core™ i7-1355U Up to 5.0 GHz, 16 GB DDR4 Customized, 512 GB SSD, 15.6″ FHD anti-glare, 250 nits, Fingerprint & Backlit KB – Silver Aluminum

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