COOSII H300 Wireless Over-Ear Bluetooth Headset — Black, Retractable Noise-Reducing Mic & 45h Talk Time

The COOSII H300 is a lightweight over-ear Bluetooth headset with a retractable noise-reducing microphone, USB dongle support, and a one-tap mute for reliable work calls and long battery life.

If you need a comfortable, business-ready headset for remote meetings, call centers, or hybrid work, the COOSII H300 combines dual connectivity, a durable retractable mic, and passive noise blocking to keep conversations clear. It ships with a USB dongle, AUX cable, charging cable, and a protective PU storage box, plus a 30-day return and 12-month warranty for peace of mind.

How does the COOSII H300 keep calls clear in noisy environments?

The H300 uses an engineered microphone element and passive noise-blocking earcups to focus on your voice while reducing ambient sounds. This mechanical and electronic design prioritizes the speaker’s voice for clearer speech transmission without relying on cloud AI processing.

• Environmental noise-cancelling microphone tuned for voice capture
• Large 4-inch memory-foam ear pads for passive noise isolation
• Retractable mic that aligns with the mouth for consistent pickup
• Physical design that limits side noise and wind interference

What connectivity options and controls are available for meetings?

The headset supports Bluetooth for phones and laptops and includes a plug-and-play USB dongle for desktops without Bluetooth. Controls are simplified: a long-press on the left earcup M button switches devices, and a single tap mutes the mic instantly when you need privacy.

• Bluetooth wireless for mobile and laptop connections
• Included USB dongle for stable desktop audio with low latency
• One-tap M button to mute/unmute quickly during calls
• Three-second M-button press to switch the active device (one at a time)

How long will the battery last during workdays or travel?

Equipped with a 1,000 mAh battery, the H300 provides extended runtime suitable for multi-day use. Expect up to 72 hours of music playback or around 45 hours of continuous talk time on a full charge, making it reliable for long shifts and travel; actual runtime varies with volume and usage.

• 1,000 mAh upgraded battery for extended sessions
• About 45 hours of talk time on a single charge (typical use)
• Up to 72 hours of music playback under optimal conditions
• USB charging cable included for easy top-ups between meetings

Is the H300 comfortable and durable for all-day wear?

The H300 is designed for long-term comfort with a lightweight, foldable frame and generous earcup padding. Built-in adjustability and skin-friendly protein leather on 4-inch ear pads reduce pressure, and the retractable mic has passed thousands of cycles for reliable use.

• Lightweight 8 oz construction for less head fatigue
• Adjustable headband with thick padding for a secure fit
• 4-inch memory foam ear pads in protein leather for comfort
• Retractable mic tested for 3,000+ retraction cycles

Who is this for: The COOSII H300 is aimed at professionals who attend frequent calls—remote workers, customer service reps, and office staff—who need long battery life, dependable voice pickup, and simple controls. It also suits travelers who want a foldable headset that pairs with phones and desktops via Bluetooth or a USB dongle. The bundled accessories and warranty make it a practical choice for businesses equipping teams or individuals upgrading their home office audio.