COOSII AC01 Wired Over-Ear Headphones with Mic, 3.5mm Jack and Volume Control

The COOSII AC01 uses an over-ear design with cushioned faux-leather ear pads to cover the ears and help reduce surrounding sound through passive isolation. Its adjustable headband and foldable construction make it practical for study sessions at a desk and for carrying between home, school, and travel.

A wired 3.5 mm connection, built-in microphone, and inline button controls bring listening and calls together in one straightforward headset. The 40 mm dynamic drivers deliver stereo audio for music, lessons, and everyday use.

Key features

The over-ear cups are designed to surround the ears, helping create a more focused listening space in classrooms, shared study areas, or during a commute. This is passive sound isolation rather than active noise cancellation, so the design works by covering the ears rather than electronically canceling ambient noise.

An adjustable headband and cushioned ear pads support a comfortable fit for extended listening. The headphones are described for adults, teens, and kids age 12 and older. A 3.5 mm plug connects to compatible audio jacks on devices such as phones, tablets, laptops, and Chromebooks. The built-in microphone supports calls and voice communication, while the inline buttons provide convenient access to volume and playback functions.

The foldable, lightweight design is useful when you need to pack the headset in a bag between classes or take it along for travel. Compared with a wireless headset, this corded model is a direct choice for listening from a device with a 3.5 mm audio jack. Its tangle-free cable feature also suits regular packing and unpacking.

Everyday use

Use the AC01 for online lessons, music while studying, calls, or laptop audio at home. The ear cups help soften nearby distractions, while the wired connection keeps the setup simple: connect the plug to a compatible 3.5 mm audio jack and use the inline buttons for supported controls. For a school day, the foldable design makes it easier to stow the headphones between classes, at a desk, the microphone is useful for voice communication.

Buyers often praise the cushioned comfort and sound, while feedback on fit and noise reduction is mixed. Some also raise concerns about long-term durability. The over-ear shape and adjustable headband are useful details to consider when choosing a fit for the intended wearer.

Usage tips

For listening, connect the 3.5 mm plug to the device’s audio jack. The microphone and volume-control functions are not compatible with PC computers as stated, using the microphone with a PC requires a separate adapter. Check that the device supports a 3.5 mm audio jack before connecting. When packing the headset, fold it for storage and avoid pulling on the cable when unplugging.

What to clarify

Which devices can I connect it to? The 3.5 mm audio plug is intended for compatible phones, tablets, laptops, and Chromebooks. The device needs a matching 3.5 mm audio jack.

Can I use the microphone with a PC? The microphone and volume-control functions are not compatible with PC computers as stated. A separate adapter is required to use the microphone with a PC.

Is it suited to travel or school? Its lightweight, foldable design makes it convenient to pack for school, commuting, and travel, while the wired connection suits devices with a 3.5 mm jack.

Final verdict

The COOSII AC01 is a practical fit for students and everyday listeners who want cushioned over-ear coverage, a built-in mic, and simple wired connection in one foldable headset. Choose it for compatible 3.5 mm devices when passive sound isolation and easy packing are useful for classes, study, or travel.