H300 Wireless Headphones Bluet…

Price: $59.99 - $6.99
(as of Nov 22, 2025 19:52:12 UTC – Details)

Product description

Your Wireless USB Headset Guide: Setup & Use

Before you begin, please ensure：

Place the computer within 1m (3 ft) of the headphones.Ensure the headphones are sufficiently charged.Confirm the computer has an available USB port

1. Insert the USB Dongle into your computer.

2. Press and hold the headphone’s power button for 3 seconds until the red and blue lights flash alternately. You will hear “Power on.”

3. Ensure the headphone is in Dongle mode.Note: Long-press the ” M ” button for 3 seconds to switch between “Bluetooth mode” and “Dongle mode.” You will hear the mode change.

4. The headphone and dongle will auto-connect within 3-10 seconds. You will hear “Connected.”

Tips for a Stable Bluetooth Connection;:

1. When using Bluetooth headphones, try to keep them away from wireless devices such as Wi-Fi routers and microwave ovens.

2. Maintain an unobstructed path between connected devices, avoiding walls or large metal objects.

Total Compatibility:

Designed to work seamlessly with Zoom, Skype, Google Hangouts, FaceTime, WebEx, GoToMeeting, and other leading conferencing platforms.

Retractable Boom Noise Cancelling Mic:

Extend and retract the boom microphone for on the go calls and discrete music listening. The surround noise cancellation microphone reduces ambient background noise for enhanced, receiving end, voice quality.

Multiple Connection Methods:

Connect to your computer, tablet, or smartphone via Bluetooth 5.0 or USB. Switch between USB Mode & Bluetooth Mode with a long press on the M button.

Smart Mute:

Simply click the M button to mute. Perfect for face-to-face talking or preventing meeting interruptions.

Convenient Operation:

Convenient controls on right ear cup:

*Volume scroll-wheel

*Mode/Mute button

*Button with multi-functions

Wired/Wireless Enabled:

Up to 40 hours of playtime on one charge from the integrated 500mAh battery. Also, a 3.5mm audio jack is there for wired use when the battery is low.

Bluetooth Version Bluetooth 5.0 Microphone Retractable Intended Use Office, Home, Public places Weight 8 oz Sound Quality High Fidelity Fit Over-ear Battery Life 30-60 Hours Wired Option Yes Foldable Design Yes Noise Isolation Passive Noise Cancellation Microphone

What affects the battery life of Bluetooth headphones during different types of use?

After full charge, the battery life may be shorter at higher volumes, call mode, in cold conditions, or with weak Bluetooth signals. Capacity also naturally declines after hundreds of charge cycles

Can I use these headphones for phone calls?

Yes, you can. The headphones offer talk time and the necessary controls for answering and ending calls.

Are these headphones suitable for long working hours?

Absolutely, the comfortable ear cushions and lightweight design ensure comfort even during extended work sessions. The headband size is adjustable to ensure a comfortable fit for different users.

Are these headphones compatible with various devices?

Yes, they can be connected to computers, tablets, and smartphones via Bluetooth or USB.

What should I do if the headphones get damaged?

Rest assured, COOSII provides complete coverage for one year to ensure your peace of mind. This includes addressing any concerns related to manufacturing, delivery, or normal wear during the initial year after your purchase.

After Sale Promise : Package includes a Foldable Headphone, USB Dongle,USB charging cable, AUX cable, Gift grade PU Storage box and User Manual. Provide a 30-day return and 12-month warranty, lifetime worry free user support. Quickly respond customer service within 12-24 hours, for any questions while using
Comfort and Adjustable: The wireless headphones with mic only weights 8 oz, durable folding and lightweight design for optimized portability. Adjustable headband with thick, comfortable padding. Ergonomically designed over-the-ear memory foam pads are made of durable yet soft, skin-friendly, protein leather (4 inch diameter) all for all-day comfort wearing and use
Crystal Clear Meetings: Innovative microphone ambient noise cancellation technology of this wireless headphones for work,allows you to have clear and uninterrupted calls even in noisy environments, all without compromising the quality of your voice. Both the mechanical and electronic design allows the wireless headphones microphone to pick up only your voice and ensures high quality audio is delivered.(please note: this wireless headphones features physical passive noise reduction）
Retractable Microphone & Long Battery Life: The flexible, cycle-tested microphone (3,000 retractions) aligns perfectly with your mouth and retracts discreetly when not in use. Enjoy up to 60 hours of music playback or 30 hours of call time on a single full charge.（Power consumption varies in different scenarios）
Clever and Convenient Mute Function: Simply tap the M button once to Mute.Use as a Set or Independently: You can use the over ear headphones wireless work with your Bluetooth-enabled mobile device (eg: smartphones), or use the USB dongle to Bluetooth-enable your audio devices such as computer, laptop to enjoy streaming. To prevent audio interference between different devices, these headphones are designed to connect to a single device (e.g., computer or smartphone) at a time