PLANTRONICS CO25-2 Single Ear Wired Headset 3.5mm USB-C USB-A Adapter
Mono wired headset with 3.5 mm jack, USB-C and USB-A adapters for consoles, PC and mobile, 270° mic, in-line volume and mute, 1.5 m cable, 40 mm driver
- Compatible phone brandsSamsung
- Compatible phone modelsiPhone 7
- Wearing styleIn-Ear
- Connection3.5 mm
- Volume controlIn-Line
- Measurements14.33 in W × 12.83 in H × 9.06 in D
- Universal adapter kit connects to USB-C, USB-A and 3.5 mm ports
- Single-ear design keeps one ear open for situational awareness
- 270° rotating boom microphone fits left or right ear
- In-line volume wheel and mic mute switch for quick control
- 40 mm driver delivers 105 dB output across 20 Hz–20 kHz
Universal Wired Mono Headset
The Plantronics CO25-2 is a single-ear wired headset built for users who need clear voice communication while staying aware of their surroundings. It connects via a 3.5 mm jack and ships with both a USB-C and a USB-A adapter for plug-and-play use on consoles, PCs, tablets and smartphones. The unilateral design suits call-centre agents, remote workers, students and gamers who prefer one ear free.
Adjustable Build With In-Line Controls
A lightweight, stretchable headband with a metal frame fits various head sizes and allows the cushioned ear pad to be worn on either side. The flexible boom microphone rotates 270° for precise positioning on the left or right. An in-line controller on the 1.5 m braided cable provides a volume wheel and a microphone mute switch for quick adjustments during calls or gameplay.
Wired Audio Performance
The 40 mm driver delivers a frequency response of 20 Hz to 20 kHz with a sensitivity of 105 dB ±3 dB for full-range sound. The noise-cancelling microphone operates at -42 dB ±2 dB sensitivity to minimise background interference. Passive sound isolation comes from the rounded in-ear tip, and the wired connection ensures zero-latency audio without the need for batteries or charging.
How it compares
Measured against everything we stock in Earbuds & Wired Headsets, at today’s prices. Recalculated every night.
- Price $24.99
- Cheaper than about 60% of the 557 comparable items (median $30.99).
Specifications
| Product | |
|---|---|
| Brand name | PLANTRONICS |
| Model name | Huawei Ascend G6 |
| Part number | CO25-2 |
| Product color | Black |
| Ports & slots | |
| Connection | 3.5 mm |
| Size & build | |
| Measurements | 14.33 in W × 12.83 in H × 9.06 in D |
| Compatibility | |
| Compatible phone brands | Samsung |
| Compatible phone models | iPhone 7 |
| More details | |
| Wearing style | In-Ear |
| Volume control | In-Line |
| Team affiliation | 1 Piece |
| League or team | Newbee |
Questions about this item
What does the 3.5 mm jack with the included USB-C and USB-A adapters cap in practice?
The 3.5 mm jack plus the two adapters give plug-and-play audio on PS5, PS4, Xbox Series/Xbox One, Switch, PC, Mac, iPhone, iPad and Android devices without driver installs.
What physical space does the headset need to fit or mount?
The adjustable metal headband stretches to fit most head sizes; the single ear cup measures 21 cm long, 10 cm wide and 6 cm high.
How is the headset installed, and which step do people get wrong?
Plug the 3.5 mm jack into the matching adapter — USB-C for newer ports, USB-A for legacy — then use the in-line volume wheel and mic switch; skipping the correct adapter for the port is the common mistake.
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