---
product_id: 48374553
title: "Adastra Portable Megaphone Bull Horn Public Speaker with Siren & Volume Control Battery Operated Voice Hailer for Events, Sports Day, Crowd Control, Clear 200m Range, Compact Carry Strap"
brand: "adastra"
price: "2217974₫"
currency: VND
in_stock: true
category: "Adastra"
url: https://www.desertcart.vn/products/48374553-adastra-portable-megaphone-bull-horn-public-speaker-with-siren-volume
store_origin: VN
region: Vietnam
---

# Built-in siren for instant attention 200m effective range 20W clear voice projection Adastra Portable Megaphone Bull Horn Public Speaker with Siren & Volume Control Battery Operated Voice Hailer for Events, Sports Day, Crowd Control, Clear 200m Range, Compact Carry Strap

**Brand:** adastra
**Price:** 2217974₫
**Availability:** ✅ In Stock

## Summary

> 📢 Make Every Word Count — Be Heard, Be Unstoppable!

## Quick Answers

- **What is this?** Adastra Portable Megaphone Bull Horn Public Speaker with Siren & Volume Control Battery Operated Voice Hailer for Events, Sports Day, Crowd Control, Clear 200m Range, Compact Carry Strap by adastra
- **How much does it cost?** 2217974₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/48374553-adastra-portable-megaphone-bull-horn-public-speaker-with-siren-volume)

## Best For

- adastra enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Volume Control:** Sliding volume adjustment lets you tailor sound levels quickly to suit any crowd size or setting.
- • **Instant Attention Grabber:** Selectable siren alert activates instantly to capture focus during critical moments or emergencies.
- • **Lightweight & Ready to Go:** Compact design with foldable handle and wrist strap makes it effortless to carry and use on the move.
- • **Versatile Event Essential:** Perfect for sports days, festivals, school activities, and crowd control—your go-to tool for seamless communication.
- • **Command the Crowd with Clarity:** 20W output delivers crystal-clear announcements up to 200 meters, ensuring your voice cuts through any environment.

## Overview

The Adastra Portable Megaphone is a battery-powered, 20W voice hailer designed for clear communication across open spaces up to 200 meters. Featuring a lightweight, compact build with a foldable handle and wrist strap, it offers easy portability and quick volume control. Its built-in siren ensures immediate attention during events, crowd control, or safety announcements, making it an indispensable tool for organizers and professionals managing outdoor gatherings.

## Description

From the manufacturer Adastra Portable Megaphone Bull Horn Loudspeaker – Battery Operated 20W Voice Hailer with Siren & Volume Control, Compact Handheld Public Address Speaker for Events, Sports, School & Safety Make yourself heard clearly when it matters. The Adastra portable megaphone is designed for reliable public announcements in busy or open environments. Lightweight, compact, and easy to carry, it helps you communicate with groups quickly and confidently. Whether you are organising a sports day, managing a crowd, leading a school activity, or coordinating an outdoor event, this handheld public address speaker delivers clear voice projection across open spaces. The simple controls allow you to adjust volume easily or switch to a siren when you need to capture attention quickly. Practical, dependable, and easy to store, it is a straightforward tool for effective communication wherever people need to hear you. PRODUCT FEATURES Clear Communication for Groups | 20W rated output projects your voice clearly up to around 200 metres in open spaces Portable and Easy to Carry | Lightweight compact design with foldable handle and wrist carry strap for comfortable use on the move Simple Controls for Any Situation | Sliding volume control allows quick sound adjustment depending on crowd size and environment Practical for Events and Outdoor Use | Ideal for sports days, festivals, school activities, demonstrations, crowd control and public announcements Get Attention Instantly | Built-in selectable siren alert helps capture attention quickly during events, demonstrations, or safety announcements BOX CONTAINS 1 × Adastra Portable Megaphone 1 × Carry Strap 1 × User Guide SPECIFICATION

## Features

- Clear Communication for Groups | 20W rated output projects your voice clearly up to around 200 metres in open spaces
- Get Attention Instantly | Built-in selectable siren alert helps capture attention quickly during events, demonstrations, or safety announcements
- Portable and Easy to Carry | Lightweight compact design with foldable handle and wrist carry strap for comfortable use on the move
- Simple Controls for Any Situation | Sliding volume control allows quick sound adjustment depending on crowd size and environment
- Reliable for Outdoor Events | Battery operated design ideal for sports days, festivals, demonstrations and crowd control
- Practical for Events and Outdoor Use | Ideal for sports days, festivals, school activities, demonstrations, crowd control and public announcements

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00KS8C9H6 |
| Battery Description | Alkaline |
| Brand | Adastra |
| Colour | Black |
| Control Method | Touch |
| Country of Origin | China |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,910) |
| Global Trade Identification Number | 05015972148006 |
| Included Components | 1 x Adastra portable megaphone & strap |
| Item Dimensions L x W x H | 14L x 14W x 22H centimetres |
| Item Type Name | Adastra Portable Megaphone Bull Horn Public Speaker with Siren & Volume Control Battery Operated Voice Hailer for Events, Sports Day, Crowd Control, Clear 200m Range, Compact Carry Strap |
| Item Weight | 0.45 Kilograms |
| Manufacturer | AVSL Group Ltd |
| Manufacturer Warranty Description | Na. |
| Maximum Range | 300 Metres |
| Model Number | L01 |
| Mounting Type | Floor Mount |
| Number of Batteries | 4 C batteries required. |
| Part Number | L01 |
| Power source | Battery Powered |
| Size | Full sized |
| Sound Level | 50 Decibels |
| Unit Count | 450.0 gram |
| Voltage | 6 Volts |
| Wattage | 20 watts |

## Product Details

- **Battery description:** Alkaline
- **Brand:** Adastra
- **Colour:** Black
- **Power source:** Battery Powered
- **Product dimensions:** 14L x 14W x 22H centimetres

## Images

![Adastra Portable Megaphone Bull Horn Public Speaker with Siren & Volume Control Battery Operated Voice Hailer for Events, Sports Day, Crowd Control, Clear 200m Range, Compact Carry Strap - Image 1](https://m.media-amazon.com/images/I/61z5kwOY2zL.jpg)

## Available Options

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

## Questions & Answers

**Q: How loud is it?**
A: I think it is very loud. Think it could be heard over 200 yards.

**Q: Can this be heard by upstairs neighbours if plut against the ceiling**
A: No idea. Suppose it depends on how thin/thick the ceiling/floor is? Also putting it against a surface may muffle the sound.

**Q: Hi , does this megaphone have a record function?**
A: No

**Q: Is the siren volume adjustable**
A: Yes. Just slide the 'button' along from (-) to (+).   Quite a good range, from very quiet to loud as a police siren.

## Frequently Bought Together

- Adastra L01 Portable megaphone Battery Operated and supplied with Carry Strap Volume control and selectable Siren , Events, Public address, Festivals, sporting events, demonstrations
- Duracell Plus C Batteries (4 Pack) - Alkaline 1.5V - 100% Life Guaranteed - Reliability For Everyday Devices - 0% Plastic Packaging - 10-Year Storage - MN1400

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-05-19*