---
product_id: 492122334
title: "Norwii S358 Portable Voice Amplifier, Wired Microphone Headset for Teachers | 10W Power Amplifiers, 4000mAh Battery, 30 Hours Working Time, Adjustable Mic Loudspeaker, Anti-Howling, USB-C Rechargeable"
brand: "norwii"
price: "¥16403"
currency: JPY
in_stock: true
reviews_count: 13
category: "Norwii"
url: https://www.desertcart.jp/products/492122334-norwii-s358-portable-voice-amplifier-wired-microphone-headset-for-teachers
store_origin: JP
region: Japan
---

# Anti-howling tech, feedback-free 10W crystal-clear output 4000mAh battery, 30h runtime Norwii S358 Portable Voice Amplifier, Wired Microphone Headset for Teachers | 10W Power Amplifiers, 4000mAh Battery, 30 Hours Working Time, Adjustable Mic Loudspeaker, Anti-Howling, USB-C Rechargeable

**Brand:** norwii
**Price:** ¥16403
**Availability:** ✅ In Stock

## Summary

> 🎙️ Own the room, wherever you teach or lead.

## Quick Answers

- **What is this?** Norwii S358 Portable Voice Amplifier, Wired Microphone Headset for Teachers | 10W Power Amplifiers, 4000mAh Battery, 30 Hours Working Time, Adjustable Mic Loudspeaker, Anti-Howling, USB-C Rechargeable by norwii
- **How much does it cost?** ¥16403 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/492122334-norwii-s358-portable-voice-amplifier-wired-microphone-headset-for-teachers)

## 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 Here.:** Advanced anti-howling tech keeps your voice crisp and screech-free, preserving professionalism.
- • **Amplify Your Authority:** 10W power delivers clear, room-filling sound so every word commands attention.
- • **Plug, Speak, Influence:** Simple 2-step setup with wired mic means zero tech headaches—just pure vocal impact.
- • **Effortless, Hands-Free Control:** Lightweight clip-on design with intuitive analog volume dial keeps you mobile and in command.
- • **Endurance That Outlasts Your Day:** Massive 4000mAh battery powers up to 30 hours—teach, lead, or present without pause.

## Overview

The Norwii S358 Portable Voice Amplifier is a professional-grade, lightweight PA system designed for educators and presenters. Featuring a powerful 10W output, anti-howling technology, and a robust 4000mAh battery delivering up to 30 hours of continuous use, it ensures clear, feedback-free sound all day long. Its simple plug-and-play setup with a wired headset mic and USB-C rechargeability makes it the ultimate hands-free vocal booster for classrooms, tours, and events.

## Description

Buy Norwii S358 Portable Voice Amplifier, Wired Microphone Headset for Teachers | 10W Power Amplifiers, 4000mAh Battery, 30 Hours Working Time, Adjustable Mic Loudspeaker, Anti-Howling, USB-C Rechargeable. Free delivery and returns on eligible orders.

Review: Well made, looks good, works well - this is well made, feels solid and looks good. It is as good as anyone could reasonably expect for the size and price. The mic is on a flexible gooseneck that stays in place and the neck/head ring thing is metal wire covered in plastic. Bluetooth works fine but this is terrible (and not very loud) as a bluetooth speaker for music- not its intended purpose. For speech- and violin- it works fine. Not super loud, just a boost in volume. Feedback suppression seems to work well.
Review: Great little Amp. - Great little voice amp. Bought this to use with a costume and totally does the job. The mic that’s supplied works well on the voice pick up and the amps volume is great. For the money it’s well worth the money. Recommend

## 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
- Anti-Howling Technology - The Voice Amplifier utilizes advanced frequency shifting technology to minimize feedback. Keep a distance of 20 cm between the microphone and the amplifier to avoid ear-piercing screeches
- 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 | B0B7RQPXNH |
| Antenna Location | Accessibility Support, Fitness & Group Activities, Religious & Community Settings, Retail & Customer Service, Teaching & Training |
| Audio Input | Wired Microphones |
| Best Sellers Rank | 388 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 2 in PA Power-Amplifiers |
| Brand | Norwii |
| Brand Name | Norwii |
| Colour | Black - 4000mAh |
| Compatible Devices | Headphone, Headset, Laptop, MP3 Player, Smartphone |
| Compatible devices | Headphone, Headset, Laptop, MP3 Player, Smartphone |
| Connectivity technology | AUX , USB |
| Connector Type | Aux, USB |
| Country of Origin | China |
| Customer Reviews | 4.3 out of 5 stars 587 Reviews |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS), PC |
| Included Components | 3.5 mm Audio Cable*1, Adjustable Waistband*1, User Manual*1, Wired Microphone Headset*1 |
| Item Dimensions | 10.2 x 9.1 x 3.8 centimetres |
| Item Weight | 0.3 Kilograms |
| Item dimensions L x W x H | 10.2 x 9.1 x 3.8 centimetres |
| Manufacturer | Shanghai Norwii Technology Co., LTd. |
| Manufacturer Part Number | S358 |
| Model Number | S358 |
| Mounting Type | Portable |
| Mounting type | Portable |
| Network Connectivity Technology | AUX, USB |
| Number of Channels | 2 |
| Number of Items | 1 |
| Output Wattage | 10 Watts |
| Power Source | Battery Powered |
| Product Warranty | 1 Year Limited Hardware Warranty |

## Product Details

- **Brand:** Norwii
- **Colour:** Black - 4000mAh
- **Compatible devices:** Headphone, Headset, Laptop, MP3 Player, Smartphone
- **Connectivity technology:** AUX, USB
- **Item dimensions L x W x H:** 10.2 x 9.1 x 3.8 centimetres

## Images

![Norwii S358 Portable Voice Amplifier, Wired Microphone Headset for Teachers | 10W Power Amplifiers, 4000mAh Battery, 30 Hours Working Time, Adjustable Mic Loudspeaker, Anti-Howling, USB-C Rechargeable - Image 1](https://m.media-amazon.com/images/I/71xc9cIF-1L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well made, looks good, works well
*by M***. on 11 June 2026*

this is well made, feels solid and looks good. It is as good as anyone could reasonably expect for the size and price. The mic is on a flexible gooseneck that stays in place and the neck/head ring thing is metal wire covered in plastic. Bluetooth works fine but this is terrible (and not very loud) as a bluetooth speaker for music- not its intended purpose. For speech- and violin- it works fine. Not super loud, just a boost in volume. Feedback suppression seems to work well.

### ⭐⭐⭐⭐⭐ Great little Amp.
*by G***E on 7 March 2026*

Great little voice amp. Bought this to use with a costume and totally does the job. The mic that’s supplied works well on the voice pick up and the amps volume is great. For the money it’s well worth the money. Recommend

### ⭐⭐⭐⭐⭐ Works great
*by P***L on 15 December 2024*

I had never used one of these devices before but as someone with a naturally soft voice I thought I would give it a try. Well worth it. Really makes a difference and stops people asking me to speak up! It can be difficult to judge how loud the volume is so have someone test it for you (it is easy to turn the volume too high). It is sensitive to feedback so make sure the speaker is pointed away from you. Quick charge and battery lasts a long while. Overall very pleased.

## Frequently Bought Together

- NORWII S358 Portable 4000mAh Rechargeable Voice Amplifier with Wired Microphone Headset & Waistband, Personal Microphone and Speaker for Teachers Tour Guides ect. (Black)
- Akingdleo 2 pcs Portable Lapel mic 3.5mm Audio Compatible with Voice Amplifiers S6

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-30*