CLIENA Kids Speaker Sensitivity Headphone Sound Adjustable PC Mini Jack Plug Headphones, 81±4dB, Plug, Sharing, Size, Music, Gaming, TV, Movies, Port,

Supported OS: Windows 10/8.1/8/7/Vista/XP, Mac OS X 10.4 or later/OS X 9.x The speaker sensitivity is 81±4dB, so the volume will not exceed this level, protecting your child's hearing and allowing you to use the device with peace of mind. By inserting a headphone plug, you can share sound with three or more headsets (※Note: Depends on PC performance) Speaker diameter 30 mm Frequency response 20Hz~20KHz Impedance 32Ω The safety protection circuit system allows you to use it for a long time with peace of mind.Domestic support allows us to respond quickly and safely. CLIENA is an Amazon exclusive brand. All CLIENA factories comply with Amazon's Supplier Code of Conduct regarding labor practices, workplace safety and health, the environment, and ethical business practices, and have undergone and been certified by an Amazon-approved third-party SR audit (social responsibility audit).