--- product_id: 154091232 title: "Voice Amplifier for Teachers-Bietrun, 20W 2000mAh Rechargeable(Working Time 20 Hrs), Microphone Headset and Speaker Set with FM Radio, Recording, USB+TF Card Play, for Meetings,Teaching, Coach" brand: "bietrun" price: "18.77 DT" currency: TND in_stock: false reviews_count: 8 url: https://www.desertcart.tn/products/154091232-voice-amplifier-for-teachers-bietrun-20w-2000mah-rechargeable-working-time store_origin: TN region: Tunisia --- # 20H Runtime 20W Power 2000mAh Battery Voice Amplifier for Teachers-Bietrun, 20W 2000mAh Rechargeable(Working Time 20 Hrs), Microphone Headset and Speaker Set with FM Radio, Recording, USB+TF Card Play, for Meetings,Teaching, Coach **Brand:** bietrun **Price:** 18.77 DT **Availability:** ❌ Out of Stock ## Summary > 🎤 Amplify Your Impact! ## Quick Answers - **What is this?** Voice Amplifier for Teachers-Bietrun, 20W 2000mAh Rechargeable(Working Time 20 Hrs), Microphone Headset and Speaker Set with FM Radio, Recording, USB+TF Card Play, for Meetings,Teaching, Coach by bietrun - **How much does it cost?** 18.77 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/154091232-voice-amplifier-for-teachers-bietrun-20w-2000mah-rechargeable-working-time) ## Best For - bietrun enthusiasts ## Why This Product - Trusted bietrun brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Day Power:** Rechargeable battery lasts up to 20 hours. - • **Unleash Your Voice:** Cover up to 1000 sq. meters effortlessly! - • **Worry-Free Warranty:** 1-year warranty for peace of mind. - • **Multi-Functional Marvel:** Supports USB, TF card, and AUX input. - • **Plug & Play Convenience:** Easy setup with wired or wireless options. ## Overview The Bietrun Voice Amplifier is a powerful 20W device designed for teachers, trainers, and coaches, featuring a 2000mAh rechargeable battery that provides up to 20 hours of continuous use. It supports multiple playback options, including USB and TF card, and comes with a wired headset microphone for easy use. With a 1-year warranty, this versatile amplifier is perfect for any speaking engagement. ## Description Full description not available ## Features - ★20w High-powered voice amplifier: ★The Bietrun voice amplifier with 20W large speakers can cover approximately 1000 square meters. Voice Amplifier for teacher, trainer, singer, coacher, tour guide, shopping mall, presentation, outdoor speech and etc. - ★2000mAH-rechargeable voice amplifier: ★Built in 2000 mAh rechargeable lithium battery. Continuously working time up to 20 hours. You can use USB cable to charge this mini voice amplifier( Power Supply 5V-0.5A) and it only needs 3hours to be fully charged. - ★Multi-function mini voice amplifier: ★Support TF card playback and USB flash drive playback. Support 3.5mm AUX audio input, Can Be used as a wired speaker. One-touch recording, only need to insert a TF card or microphone for recording. Additional FM radio and display capabilities, let you see at a glance. - ★Plug and play: The voice amplifier comes with a wired headset microphone headset, just turn on the voice amplifier and plug in the microphone headset to use. ★Or choose this BietrunWXM01 wireless microphone headset so you can move freely in the classroom. - ★Packag list and 1year warranty : Bietrun offers 1 year warranty and free replacement service.When there're problems, write to us and we will solve your problems quickly. Packag: 1 x Voice Amplifier, 1 x Headset Microphone, 1 x USB Charging Cable, 1 x 3.5mm Audio MP3 Cable, 1 x Adjustable Strap, 1 x Instruction . ## Product Details - **Brand:** Bietrun - **Item dimensions L x W x H:** 3.3 x 1.4 x 4.6 inches - **Connectivity Technology:** USB, AUX - **Color:** KYQ01 - **Compatible Devices:** Headset ## Images ![Voice Amplifier for Teachers-Bietrun, 20W 2000mAh Rechargeable(Working Time 20 Hrs), Microphone Headset and Speaker Set with FM Radio, Recording, USB+TF Card Play, for Meetings,Teaching, Coach - Image 1](https://m.media-amazon.com/images/I/81xgJnGZw1L.jpg) ![Voice Amplifier for Teachers-Bietrun, 20W 2000mAh Rechargeable(Working Time 20 Hrs), Microphone Headset and Speaker Set with FM Radio, Recording, USB+TF Card Play, for Meetings,Teaching, Coach - Image 2](https://m.media-amazon.com/images/I/81PZoy1DpsL.jpg) ![Voice Amplifier for Teachers-Bietrun, 20W 2000mAh Rechargeable(Working Time 20 Hrs), Microphone Headset and Speaker Set with FM Radio, Recording, USB+TF Card Play, for Meetings,Teaching, Coach - Image 3](https://m.media-amazon.com/images/I/81A0I+gBQTL.jpg) ![Voice Amplifier for Teachers-Bietrun, 20W 2000mAh Rechargeable(Working Time 20 Hrs), Microphone Headset and Speaker Set with FM Radio, Recording, USB+TF Card Play, for Meetings,Teaching, Coach - Image 4](https://m.media-amazon.com/images/I/817DLBzA3KL.jpg) ![Voice Amplifier for Teachers-Bietrun, 20W 2000mAh Rechargeable(Working Time 20 Hrs), Microphone Headset and Speaker Set with FM Radio, Recording, USB+TF Card Play, for Meetings,Teaching, Coach - Image 5](https://m.media-amazon.com/images/I/811W7nK+A5L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars I'm REALLY impressed. *by L***N on Reviewed in the United States on July 2, 2020* This thing is nuts -1. A digital radio!2. A sound amplifier!3. MP3 player!Generally good. About what you would expect from a voice amplifier, a bit tinny - but loud and clear if you are.MP3 player works, but only on one type of memory, and not both as the instructions say.Radio is aces. ### ⭐⭐⭐⭐ 4.0 out of 5 stars Unit is lightweight; easy to setup and works well. *by D***S on Reviewed in the United States on October 15, 2019* Okay, first we've only had the system for about a week. Size is great. Volume level seems fine. The speaker is lightweight and easy to use. Sound quality could be a little better. For the price I think it will be a good product for our uses. I'll update this review after we've used it for a couple of months. It does have a one year warranty which is nice. Hopefully it will exceed the warranty by several years. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars My students hate it! Lol *by I***0 on Reviewed in the United States on November 24, 2019* UPDATE - I’m concerned about being heard through my mask when we go back to school. So I charged this up and tested it wearing a mask. It works beautifully.I love this thing!I teach 7th grade history. My classes are only 45 minutes long, so every second is precious. This cuts down on the amount of time I spend redirecting at the beginning of each class. I’m soft spoke naturally so I don’t have to strain to be heard. I still have a voice by the end of the day and I’m no quite as exhausted.I can pre-record books on it using a flash drive. Then I can play them and monitor behavior or take attendance. I also don’t have to read the same book 6 times.My students hate it. They say I sound like I’m taking their order in a drive through. The voice recordings don’t sound that way. I think they don’t like the fact that I now drown out their side conversations. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/154091232-voice-amplifier-for-teachers-bietrun-20w-2000mah-rechargeable-working-time](https://www.desertcart.tn/products/154091232-voice-amplifier-for-teachers-bietrun-20w-2000mah-rechargeable-working-time) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-14*