---
product_id: 1427505
title: "Plantronics S12 Corded Telephone Headset System 64703-03"
brand: "poly"
price: "R$2219"
currency: BRL
in_stock: true
reviews_count: 4
category: "Poly"
url: https://www.desertcart.com.br/products/1427505-plantronics-s12-corded-telephone-headset-system-64703-03
store_origin: BR
region: Brazil
---

# 2-in-1 convertible headset Firefly in-use LED Noise-canceling mic Plantronics S12 Corded Telephone Headset System 64703-03

**Brand:** poly
**Price:** R$2219
**Availability:** ✅ In Stock

## Summary

> 🎙️ Elevate your desk game with hands-free clarity and style!

## Quick Answers

- **What is this?** Plantronics S12 Corded Telephone Headset System 64703-03 by poly
- **How much does it cost?** R$2219 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/1427505-plantronics-s12-corded-telephone-headset-system-64703-03)

## Best For

- poly enthusiasts

## Why This Product

- Trusted poly brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Crystal-Clear Calls:** Advanced noise-canceling microphone ensures your voice cuts through background noise with professional clarity.
- • **Dual-Wear Flexibility:** Switch effortlessly between over-the-head stability or over-the-ear convenience for all-day comfort.
- • **On-Device Audio Control:** Integrated volume and mute controls put you in command without breaking your workflow.
- • **Instant Availability Signal:** Exclusive Firefly LED indicator lights up to let colleagues know when you're on a call—no more interruptions.
- • **Seamless Multi-Line Compatibility:** Works flawlessly with single and multi-line desk phones, including popular Avaya systems.

## Overview

The Plantronics S12 Corded Telephone Headset System is a versatile, professional-grade headset featuring a convertible design for over-the-head or over-the-ear wear, a noise-canceling microphone for superior call clarity, and a unique Firefly in-use LED indicator to signal call status. Compatible with most corded single and multi-line phones, it includes volume and mute controls and a convenient headset stand, making it an essential tool for busy professionals seeking hands-free efficiency and polished communication.

## Description

Product Description Plantronics S12 Telephone Headset System offers hands-free convenience and comfort. Includes a 2-in-1 convertible headset for over-the-head stability or over-the-ear convenience, a noise-canceling microphone for superior sound clarity and the Firefly in-use indicator light that lets others know your customers are on the phone. desertcart.com The Plantronics S12 Telephone Headset System offers hands-free convenience and comfort and includes a 2-in-1 convertible headset for over-the-head stability or over-the-ear convenience, a noise-canceling microphone for superior sound clarity, and the Firefly in-use indicator light that lets others know you are on the phone.With a 5.75-by-9.0-inch footprint, the S12 fits easily onto available desktop space, while a headset stand provides a convenient resting place for the headset. Clean Design and Hands-Free ConvenienceThe S12 is a complete telephone headset solution for those looking for hands-free convenience with clean, uncluttered design. S12 is a corded headset that includes a Firefly in-use indicator headset and a stylish adapter which connects to your telephone. The S12 is compatible with the majority of corded business telephones through the use of a slide switch and microphone level controls. It's compatible with both single and multi-line phones for application flexibility. The S12 fits easily onto available desktop space with convenient headset stand. View larger Volume and mute controls on the S12 keep you in control of the audio during the call. An extended boom and noise-canceling microphone filter out background sounds for heightened speech clarity. Get the audio quality of corded handsets while keeping your hands free to type or take notes.Exclusive Firefly In-Use LED IndicatorThe Firefly in-use indicator headset is unique to Plantronics and features a bright LED that flashes when you are using the headset to make a telephone call. It is prominently situated near the headset microphone to ensure your colleagues are aware that you are using the telephone.Two Wearing Styles for Total ComfortThe headset features two wearing styles: a conformable earloop and an adjustable headband, with a behind-the-head neckband as an optional extra. Enjoy the convenience of an over-the-ear design or the stability of an over the head design for maximum flexibility.Add Hands-Free Capability to Any Desk PhoneThe S12's adapter connects to your telephone. The adapter includes features such as headset/handset switch, volume control and mute control for your listening comfort. The adapter can either be powered using batteries or by an optional power supply unit. Technical SpecificationsWeight: Over-the-head, 41 grams; Over-the-ear, 18 gramsFrequency Range: Transmit, 100 to 4000Hz; Receive, 200 to 4000HzNoise Cancellation: 10dBAcoustic Limit: 24dBPaWhat's in the BoxHeadset, amplifier, AC power adapter, cord (phone to amplifier) P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the Manufacturer Plantronics S12 Telephone Headset System offers hands-free convenience and comfort. Includes a two-in-one convertible headset for over-the-head stability or over-the-ear convenience, a noise-canceling microphone for superior sound clarity and the Firefly in-use indicator light that lets others know you are on the phone. See more

Review: Excellent Phone - Excellent phone for the corporate workplace. We use the Avaya 2410 multi-line phones and the S12 works very well. I was a bit curious because it sounded like the phone was only compatible with 1 and 2-line phones. Mine is a 6-line system, though, and it trucks right along. The instructions are ok but it illustrates that you have to plug the phone's handset into the headset's base, which you don't. You "can" but if you leave the handset as-is, you can use the headset, handset and speaker, whichever you prefer. If you plug the handset into the base, you can no longer use the handset. To use the S12 with an Avaya 2410 phone: 1. Plug in the power, connect the headset to the base, etc. 2. Plug the base into the headset jack on the side of the phone (by the handset jack). You do not have to plug the handset into the base. 3. Set the Compatibility slider to 1. 4. Click the "Headset" button on the phone and you're good to go. Naturally you will need to adjust the speaking volume (top of the base) and your listening volume (side of the base). Beyond that, the audio was good for me and my caller. I would definitely purchase this phone again and have already recommended it to my colleagues.
Review: Works Flawlessly - Honestly, I bought the Plantronics S12 for the looks and for the price. Now that I am using it, I have discovered that it is much better than the higher priced units that are being used around my office. On the left hand side of the unit there is a sliding switch so that you can modulate the headset to your telephone. This worked for me out of the box. Depending on your telephone, you may have some hiss on the line, but I have none. On the right hand side there is a switch to set the microphone between high and low gain, and there is a dial to fine tune it within each of the settings. Out of the box, I sounded very loud in the ear piece and people could hear me typing. I set it to low gain, and moved the dial to the lowest setting. People can still hear me fine, I cannot hear myself in the speaker, and no one can hear me typing. This is fantastic! My previous headset could not turn down the gain this low, now I can use the mute button less! The headset flashes a red light when you are on the phone. People will now know that they can interrupt even if you have your headset on, they just need to check for the flashing light. There will be a learning curve for this in my office, but it is a great idea. And finally, the amplifier bas has a holder for the headset, a simple but wonderful idea that does not work so well with the over the head configuration, but it still works. The only problem is that the Plantronics S12 has no battery backup. But if the power is out at the office, there is only so much you can do on the phone anyway and you don't need a headset then since you cannot type on your computer anyway.

## Features

- 2-in-1 convertible headset for over-the-head stability or over-the-ear Convenience
- Noise-canceling microphone for clarity
- In-use indicator light lets others know phone is in use
- Hands-free convenience & comfort
- Over-the-head and over-the-ear configurations
- Volume and mute controls
- Noise-canceling microphone, call clarity technology
- Convenient headset stand
- Compatible with single and multi-line phones

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000136P8W |
| Age Range (Description) | Adult |
| Best Sellers Rank | #787 in Telephone Headsets |
| Cable Feature | Retractable |
| Carrying Case Color | Black |
| Carrying Case Material | Plastic |
| Compatible Devices | All major corded desk phones |
| Connectivity Technology | Wired |
| Control Method | Touch |
| Control Type | Volume Control |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.0 4.0 out of 5 stars (919) |
| Date First Available | January 23, 2008 |
| Department | Electronics |
| Earpiece Shape | Over Ear |
| Form Factor | On Ear |
| Global Trade Identification Number | 00017229116719, 30017229116710 |
| Hardware Interface | 3.5mm Audio |
| Headphones Jack | 3.5 mm Jack |
| Included Components | S12 Telephone Headset System |
| Input Device Interface | Wired (3.5mm audio jack or proprietary) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.3 pounds |
| Item model number | 65145-01 |
| Language | English |
| Manufacturer | Poly |
| Material | Plastic |
| Model Name | S12 Convertible Headset with Amplifier |
| National Stock Number | 5965-01-535-9031 |
| Noise Control Features | active_noise_cancellation |
| Number of Items | 1 |
| Other display features | Wireless |
| Product Dimensions | 9 x 5.7 x 4.2 inches |
| Recommended Uses For Product | Calling |
| Special Feature | Comfortable, Hands-free |
| Special features | Comfortable, Hands-free |
| Specific Uses For Product | personal |
| Style | Headset |
| Supports Bluetooth Technology | No |
| UPC | 012303453261 086000291174 031112928609 803982975645 014445569725 611102280070 814227010748 999992888355 132017976051 999992117028 807320190240 707004201937 012300753630 012302833439 017229116719 172302650068 777785820436 017229117471 001910139101 641438776817 807320373612 666661325199 961613159854 601000740127 012351210236 778888984681 070010036290 617407355888 805095152166 168141409332 9562587917… |
| Unit Count | 1.00 Count |

## Product Details

- **Brand:** POLY
- **Color:** Black
- **Ear Placement:** Over Ear
- **Form Factor:** Over Ear
- **Noise Control:** Active Noise Cancellation

## Images

![Plantronics S12 Corded Telephone Headset System 64703-03 - Image 1](https://m.media-amazon.com/images/I/11az9N-fBdL.jpg)
![Plantronics S12 Corded Telephone Headset System 64703-03 - Image 2](https://m.media-amazon.com/images/I/419RY+PzhuL.jpg)
![Plantronics S12 Corded Telephone Headset System 64703-03 - Image 3](https://m.media-amazon.com/images/I/41MbPTwsdQL.jpg)
![Plantronics S12 Corded Telephone Headset System 64703-03 - Image 4](https://m.media-amazon.com/images/I/41YJmLxLokL.jpg)
![Plantronics S12 Corded Telephone Headset System 64703-03 - Image 5](https://m.media-amazon.com/images/I/41aTc4VHLwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Phone
*by P***Y on June 22, 2012*

Excellent phone for the corporate workplace. We use the Avaya 2410 multi-line phones and the S12 works very well. I was a bit curious because it sounded like the phone was only compatible with 1 and 2-line phones. Mine is a 6-line system, though, and it trucks right along. The instructions are ok but it illustrates that you have to plug the phone's handset into the headset's base, which you don't. You "can" but if you leave the handset as-is, you can use the headset, handset and speaker, whichever you prefer. If you plug the handset into the base, you can no longer use the handset. To use the S12 with an Avaya 2410 phone: 1. Plug in the power, connect the headset to the base, etc. 2. Plug the base into the headset jack on the side of the phone (by the handset jack). You do not have to plug the handset into the base. 3. Set the Compatibility slider to 1. 4. Click the "Headset" button on the phone and you're good to go. Naturally you will need to adjust the speaking volume (top of the base) and your listening volume (side of the base). Beyond that, the audio was good for me and my caller. I would definitely purchase this phone again and have already recommended it to my colleagues.

### ⭐⭐⭐⭐⭐ Works Flawlessly
*by M***R on September 1, 2005*

Honestly, I bought the Plantronics S12 for the looks and for the price. Now that I am using it, I have discovered that it is much better than the higher priced units that are being used around my office. On the left hand side of the unit there is a sliding switch so that you can modulate the headset to your telephone. This worked for me out of the box. Depending on your telephone, you may have some hiss on the line, but I have none. On the right hand side there is a switch to set the microphone between high and low gain, and there is a dial to fine tune it within each of the settings. Out of the box, I sounded very loud in the ear piece and people could hear me typing. I set it to low gain, and moved the dial to the lowest setting. People can still hear me fine, I cannot hear myself in the speaker, and no one can hear me typing. This is fantastic! My previous headset could not turn down the gain this low, now I can use the mute button less! The headset flashes a red light when you are on the phone. People will now know that they can interrupt even if you have your headset on, they just need to check for the flashing light. There will be a learning curve for this in my office, but it is a great idea. And finally, the amplifier bas has a holder for the headset, a simple but wonderful idea that does not work so well with the over the head configuration, but it still works. The only problem is that the Plantronics S12 has no battery backup. But if the power is out at the office, there is only so much you can do on the phone anyway and you don't need a headset then since you cannot type on your computer anyway.

### ⭐⭐⭐ Buzzing Sound
*by J***I on May 27, 2014*

I have two of these headsets - one at the work office and one at the home office... It is close to being a great headset with one key design flaw that causes BUZZING.... After using it at my home office I noticed it was highly susceptible to an annoying buzzing sound when the base unit is too close to other electronic devices (my home office desk is much more cluttered with electronics than my work office desk)... It also seems that the power cord itself can cause the buzzing sound if it touches the headset cord. The buzzing sound is due to electromagnetic interference and is a result of the inadequate shielding on the headset cable that plugs in to the base (right next to the power cord). The headset cord is a very thin straight cable with very little shielding.... thus the design flaw. If you can keep this device away from other electronics, and route its power cable away from the headset cable, you should be able to avoid the buzzing (it doesn't buzz on my work office desk unless I deliberately move it close to other electronics). If it weren't for the buzzing, I would love this thing... It is very comfortable and easy to use. (Dear Plantronics - BTW... I'd pay the extra $5 for a more beefy shielding on the headset cable... just saying)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-07*