---
product_id: 689725685
title: "Bluetooth Voice Amplifier for Teacher with Wired Microphone Headset | Portable Speaker and Microphone for Classroom & Outdoor, Teaching/Tour Guide/Training, USB-C Rechargeable Power Amplifiers"
brand: "norwii"
price: "R$525"
currency: BRL
in_stock: true
reviews_count: 13
category: "Norwii"
url: https://www.desertcart.com.br/products/689725685-bluetooth-voice-amplifier-for-teacher-with-wired-microphone-headset-portable
store_origin: BR
region: Brazil
---

# Advanced anti-feedback tech 10W crystal-clear output 2000mAh 12-15h battery life Bluetooth Voice Amplifier for Teacher with Wired Microphone Headset | Portable Speaker and Microphone for Classroom & Outdoor, Teaching/Tour Guide/Training, USB-C Rechargeable Power Amplifiers

**Brand:** norwii
**Price:** R$525
**Availability:** ✅ In Stock

## Summary

> 🎙️ Speak Up, Stand Out — Amplify Your Presence with Norwii!

## Quick Answers

- **What is this?** Bluetooth Voice Amplifier for Teacher with Wired Microphone Headset | Portable Speaker and Microphone for Classroom & Outdoor, Teaching/Tour Guide/Training, USB-C Rechargeable Power Amplifiers by norwii
- **How much does it cost?** R$525 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/689725685-bluetooth-voice-amplifier-for-teacher-with-wired-microphone-headset-portable)

## Best For

- norwii enthusiasts

## Why This Product

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

## Key Features

- • **Feedback? Not on Your Watch:** Smart frequency shifting tech suppresses ear-piercing feedback for smooth, professional audio.
- • **Effortless, Hands-Free Control:** Analog dial offers precise volume tuning; clip-on design keeps you mobile and hands-free all day.
- • **Sleek Rose Gold, Built for Pros:** Lightweight, portable, and stylish—trusted by educators, tour guides, and fitness pros alike.
- • **Endurance That Keeps Up With You:** Long-lasting 2000mAh battery powers through 12-15 hours of continuous use—no mid-day recharge panic.
- • **Amplify Your Voice, Save Your Throat:** 10-watt output delivers powerful, distortion-free sound so every word counts.

## Overview

The Norwii Bluetooth Voice Amplifier is a professional-grade, portable sound system designed for teachers, tour guides, and outdoor presenters. Featuring a powerful 10-watt output, advanced anti-feedback technology, and a robust 2000mAh battery offering up to 15 hours of continuous use, it ensures crystal-clear voice projection without strain. Its lightweight, rose gold design includes an easy-to-use analog volume dial and clip-on strap for hands-free convenience, making it the go-to amplifier for clear communication in any setting.

## Description

Product description Professional Amplifier for Teachers – Crystal Clear, All-Day Power Tired of straining your voice in large classrooms or outdoor settings? Our Teacher’s Portable Voice Amplifier delivers louder volume without distortion, ensuring every student hears you clearly—without shouting. Loud & Crystal Clear 3.5-inch speakers plus a booster circuit assure loud and clear sound, helping students listen clearly and save the teacher's throat. Smart Anti-Squeal Tech Working well with minimal feedback with advanced frequency shifting technology. Keep the distance between the voice amplifier and the microphone at more than 20 cm to supress the eEar-Piercing Feedback Fine-tune volume with precise dial control The dial control allows for more subtle and precise volume adjustment. When worn on the body, the dial is more convenient for volume adjustment than the button type. Swivel- adjustable Microphone You can adjust the angle of the microphone to position the microphone head as close to your mouth as possible to achieve the best amplification effect. Minimalist and Functional Design Applicable scenarios Multi-color and What’s Included Norwii Voice Amplifier S358 2000mAh S358 Pro Wireless 4000mAh S328 4000mAh S368 1800mAh

Review: Great sound quality and volume, long battery life! - I teach workshops inside loud venues, like breweries, and I wasn't sure if this would be loud enough for what I needed, but it has worked great! Even with a group of 30 or more people in a large outdoor space, everyone can hear me well. I used it for at least 5 classes (2 hrs per class) and the battery still didn't need to be charged. Worth every penny, and I wish I'd bought it sooner!
Review: Love this mic! Lasts a couple years with continuous use! - Update! I just bought a second one. The design is slightly updated. Works like a charm. Hoping to get 2 more years out of it! I bought a different one recently, and that broke after 2 months (the strap broke the first week. Not this product! I'm coming here to give this item 5 stars. Will update with how long it lasts me this time around! This cute little mic lasted me 2 years of continuous teacher use before glitching in me. So sad. I loved it.

## Features

- Effective for Teaching - With a 10-watt output power,the portable voice amplifier with wired headset microphone make your voice louder and travel further, helping students listen more clearly and attentively. Its lightweight and portable design makes it a favorite among teachers, fitness instructors, tour guides, promotion events
- Loud and Clear Sound - 3-inch speakers plus a booster circuit makes the voice amplifier crystal clear sound with good sound quality, effectively saving the teacher's throat. Designed for educators, Trusted by Professionals. Teacher must haves
- Teach Without Ear-Piercing Feedback - The Voice Amplifier utilizes advanced frequency shifting technology to supress feedback effectively. To ensure optimal performance, maintain a distance of 20 cm between the microphone and the amplifier to avoid any feedback issues
- Week-Long Battery - 2000 mAh battery supports 12-15 hours continuous teaching, 4000 mAh battery supports 25-30 hours continuous teaching. Full-day outdoor events without recharge anxiety. USB-C rechargeable
- Simple and Practical, Teacher-Centric Design - Only 2 steps: 1.Turn on the amplifier; 2.Plug the microphone into the MIC port of the amplifier. Now, it's ready. Unlike buttons, the analog dial offers finer volume increments. Ultra-lightweight with clip-on belt strap – teach hands-free

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DDSFJBZ7 |
| Antenna Location | Accessibility Support, Emergency & Safety, Fitness & Group Activities, Outdoor & Hobby Use, Religious & Community Settings, Retail & Customer Service, Teaching & Training |
| Audio Input | AUX, MIC |
| Best Sellers Rank | #521 in Musical Instruments ( See Top 100 in Musical Instruments ) #3 in Power Amplifiers #232 in Music Recording Equipment |
| Brand | Norwii |
| Built-In Media | 3.5 mm Audio Cable*1, Adjustable Waistband*1, User Manual*1, Wired Microphone Headset*1 |
| Color | Rose Gold - 2000mAh |
| Compatible Devices | Headphone, Headset, Laptop, MP3 Player, Smartphone |
| Connectivity Technology | AUX |
| Connector Type | Aux, USB |
| Customer Reviews | 4.3 out of 5 stars 3,313 Reviews |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS), PC |
| Item Dimensions | 4 x 3.59 x 1.49 inches |
| Item Weight | 5.6 ounces |
| Item dimensions L x W x H | 4 x 3.59 x 1.49 inches |
| Manufacturer | Shanghai Norwii Technology Co., LTd. |
| Mfr Part Number | S358 |
| Model Number | S358 |
| Mounting Type | Portable |
| Number of Channels | 2 |
| Output Wattage | 10 Watts |
| Power Source | Battery Powered |
| Warranty Description | 1 Year Limited Warranty |

## Product Details

- **Brand:** Norwii
- **Color:** Rose Gold - 2000mAh
- **Compatible Devices:** Headphone, Headset, Laptop, MP3 Player, Smartphone
- **Connectivity Technology:** AUX
- **Item dimensions L x W x H:** 4 x 3.59 x 1.49 inches

## Images

![Bluetooth Voice Amplifier for Teacher with Wired Microphone Headset | Portable Speaker and Microphone for Classroom & Outdoor, Teaching/Tour Guide/Training, USB-C Rechargeable Power Amplifiers - Image 1](https://m.media-amazon.com/images/I/71vRNTkKupL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great sound quality and volume, long battery life!
*by J***E on April 1, 2026*

I teach workshops inside loud venues, like breweries, and I wasn't sure if this would be loud enough for what I needed, but it has worked great! Even with a group of 30 or more people in a large outdoor space, everyone can hear me well. I used it for at least 5 classes (2 hrs per class) and the battery still didn't need to be charged. Worth every penny, and I wish I'd bought it sooner!

### ⭐⭐⭐⭐⭐ Love this mic! Lasts a couple years with continuous use!
*by L***A on August 31, 2025*

Update! I just bought a second one. The design is slightly updated. Works like a charm. Hoping to get 2 more years out of it! I bought a different one recently, and that broke after 2 months (the strap broke the first week. Not this product! I'm coming here to give this item 5 stars. Will update with how long it lasts me this time around! This cute little mic lasted me 2 years of continuous teacher use before glitching in me. So sad. I loved it.

### ⭐⭐⭐⭐ Works too Well
*by S***D on March 19, 2026*

It's really a nice item, however it doesn't really work for outside use. It doesn't filter out the wind noise.

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**Shop now:** [https://www.desertcart.com.br/products/689725685-bluetooth-voice-amplifier-for-teacher-with-wired-microphone-headset-portable](https://www.desertcart.com.br/products/689725685-bluetooth-voice-amplifier-for-teacher-with-wired-microphone-headset-portable)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-08-02*