--- product_id: 421160912 title: "Bluetooth Voice Amplifier Speaker Waterproof, Microphone Amplifier Wireless Portable Megaphone Loudspeaker 18W Output for Outdoor, Teachers, Coaches, Elderly, Tour Guide, Presentation and More (Black)" brand: "responsebridge" price: "S/.1352" currency: PEN in_stock: true reviews_count: 5 category: "Response Bridge" url: https://www.desertcart.pe/products/421160912-bluetooth-voice-amplifier-speaker-waterproof-microphone-amplifier-wireless-portable-megaphone store_origin: PE region: Peru --- # 35m wireless mic range 18W powerful output 12-hour battery life Bluetooth Voice Amplifier Speaker Waterproof, Microphone Amplifier Wireless Portable Megaphone Loudspeaker 18W Output for Outdoor, Teachers, Coaches, Elderly, Tour Guide, Presentation and More (Black) **Brand:** responsebridge **Price:** S/.1352 **Availability:** ✅ In Stock ## Summary > 🎤 Amplify your presence, anywhere, anytime! ## Quick Answers - **What is this?** Bluetooth Voice Amplifier Speaker Waterproof, Microphone Amplifier Wireless Portable Megaphone Loudspeaker 18W Output for Outdoor, Teachers, Coaches, Elderly, Tour Guide, Presentation and More (Black) by responsebridge - **How much does it cost?** S/.1352 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/421160912-bluetooth-voice-amplifier-speaker-waterproof-microphone-amplifier-wireless-portable-megaphone) ## Best For - responsebridge enthusiasts ## Why This Product - Trusted responsebridge brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Audio Inputs:** Supports AUX and TF card inputs for ultimate flexibility in any presentation or event. - • **All-Day Amplification Power:** Robust 4400mAh battery delivers up to 12 hours of uninterrupted, crystal-clear sound. - • **Built to Brave the Elements:** Waterproof, compact, and rugged design ensures your voice is heard rain or shine. - • **Seamless Bluetooth Streaming:** Bluetooth 4.2 connectivity lets you stream your favorite playlists from any device up to 33 feet away. - • **Unleash Your Voice, Wire-Free:** Comfortable UHF wireless headset mic with 35m range keeps you moving freely without the bulk. ## Overview The ResponseBridge RB-800U is a compact, waterproof Bluetooth voice amplifier with an 18W output, featuring a wireless UHF headset microphone with a 35m range, 12-hour rechargeable battery life, and versatile connectivity options including Bluetooth 4.2, AUX, and TF card support—perfect for outdoor events, teachers, coaches, and presenters seeking powerful, portable sound. ## Description [Wireless, no burden] You will get a wireless uhf comfortable headsest microphone(35m/100ft), no need to carry the amplifier just put it on table around you. Review: Quite a impresive product - Not gonna lie, this product is quite impressive. Before purchasing the product I did not check its dimensions, but it looked powerful so I took it. It is actually quite small (maybe in lenght it's about the size of my hand). However, it produces a very powerful and clean sound. I love that the battery is rechargeble and that it can be used both with 3.5mm and Bluetooth. I'd say that it is quite straightforward to use, nothing that I haven't seen so far. The build is very robust and I do believe that it is waterproof (haven't tested it yet). When I fully charged the battery firstly it worked for about 12 hours? So yes, that is damn impressive and I strongly recommend this product. Review: Voice amplifier - Have not used it yet but tested it and seems ok. But it’s not as loud as I wanted it to be as my voice still seems small outdoors . I guess indoors will be sufficient. The Voice speaker headset not as comfortable as keeps moving whenever I move. Gentle movements works fine just no jarring or jumping movements. Will test again and update. Speaker is too heavy to clip on body so it has to be at least 1 meter away from body . Standing 3 meters away is still ok . ## Features - [Wireless, no burden] You will get a wireless uhf comfortable headsest microphone(35m/100ft), no need to carry the amplifier just put it on table around you. - [Long batery life] This high power speaker comes with 4400mAh rechargeable lithium battery, gives you up to 12 hrs wireless stable continuous amplification with a single charge; Ideal for personal or - [Bluetooth 4.2] Not only an amplifiers but also a bt speaker, you can stream your favorite music from any type of Bluetooth-enabled mobile device, up to 33 feet away; Also support Aux input, TF Card, - [Worry-Free Warranty] At ResponseBridge, we believe in our products. That's why we back them all with an 12-month warranty and provide friendly, easy-to-reach support. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07D5YC4T8 | | Audio Input | AUX, TF Card | | Best Sellers Rank | #44,732 in Musical Instruments ( See Top 100 in Musical Instruments ) #499 in PA Systems | | Brand | ResponseBridge | | Brand Name | ResponseBridge | | Colour | Black | | Compatible Devices | Amplifier, Speaker | | Connectivity Technology | AUX , Bluetooth | | Connector Type | 3 5mm TRS | | Customer Reviews | 4.1 out of 5 stars 442 Reviews | | Item Dimensions | 11.9 x 9.7 x 4.6 Centimeters | | Item Weight Unit of Measure | 13 Ounces | | Item dimensions L x W x H | 11.9 x 9.7 x 4.6 Centimeters | | Manufacturer | ResponseBridge | | Manufacturer Part Number | RB-800U | | Model Number | RB-800U | | Mounting Type | Tabletop, Floor Standing | | Network Connectivity Technology | AUX, Bluetooth | | Number of Channels | 1 | | Output Wattage | 18 Watts | | Power Source | Battery Powered | ## Product Details - **Brand:** ResponseBridge - **Item dimensions L x W x H:** 11.9 x 9.7 x 4.6 Centimeters - **Connectivity Technology:** AUX, Bluetooth - **Colour:** Black - **Compatible Devices:** Amplifier, Speaker ## Images ![Bluetooth Voice Amplifier Speaker Waterproof, Microphone Amplifier Wireless Portable Megaphone Loudspeaker 18W Output for Outdoor, Teachers, Coaches, Elderly, Tour Guide, Presentation and More (Black) - Image 1](https://m.media-amazon.com/images/I/71Q9AdfbL4L.jpg) ![Bluetooth Voice Amplifier Speaker Waterproof, Microphone Amplifier Wireless Portable Megaphone Loudspeaker 18W Output for Outdoor, Teachers, Coaches, Elderly, Tour Guide, Presentation and More (Black) - Image 2](https://m.media-amazon.com/images/I/71YNNulMFBL.jpg) ![Bluetooth Voice Amplifier Speaker Waterproof, Microphone Amplifier Wireless Portable Megaphone Loudspeaker 18W Output for Outdoor, Teachers, Coaches, Elderly, Tour Guide, Presentation and More (Black) - Image 3](https://m.media-amazon.com/images/I/61d4GDVN0sL.jpg) ![Bluetooth Voice Amplifier Speaker Waterproof, Microphone Amplifier Wireless Portable Megaphone Loudspeaker 18W Output for Outdoor, Teachers, Coaches, Elderly, Tour Guide, Presentation and More (Black) - Image 4](https://m.media-amazon.com/images/I/819JxO4E1hL.jpg) ![Bluetooth Voice Amplifier Speaker Waterproof, Microphone Amplifier Wireless Portable Megaphone Loudspeaker 18W Output for Outdoor, Teachers, Coaches, Elderly, Tour Guide, Presentation and More (Black) - Image 5](https://m.media-amazon.com/images/I/61Cr+z8qlzL.jpg) ## Questions & Answers **Q: How to pair this wireless amplifier and microphone?** A: Hi, normally we have already paired it for you before you receive the package, if you need to re-pair it, please follow the steps below and I will attach a video for your reference: Step 1: Turn on the voice amplifier, short press""M" key to switch to UHF mode, long press“M" key for 3 seconds,amplifier comes a voice prompt "UHF is waiting for conn-ection". Step 2:Turn on the wireless microphone and long press top key for 5 seconds, pairing is successful with a woiceprompt-UHF is connected". please contact the Service Department (cindyresponse@outlook.com)if you have any problems with the products. We will give you a positive response within 24 hours. **Q: can you connect to a separate speaker with music via bluetooth? I already use bluetooth for my music. Can I also connect two devices using bluetooth?** A: Yes, you can connect to a separate speaker with music via bluetooth. **Q: How do I get a second wireless mic headset for this to use when battery dies on first headset?** A: The wireless set is unreliable and I was never able to find a replacement. So I went with wired and no more problems. **Q: It says the battery can last up to 2-3 years. But I don’t see any opening on the devise to put new ones. Can the batteries be replaced by the owner?** A: It is a rechargable battery (in both the headset and the amplifier). If there is a limit on the life of the rechargable battery, I'm not aware of it and I've had no issues with my batteries after far more than 3 years. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quite a impresive product *by O***E on 12 September 2023* Not gonna lie, this product is quite impressive. Before purchasing the product I did not check its dimensions, but it looked powerful so I took it. It is actually quite small (maybe in lenght it's about the size of my hand). However, it produces a very powerful and clean sound. I love that the battery is rechargeble and that it can be used both with 3.5mm and Bluetooth. I'd say that it is quite straightforward to use, nothing that I haven't seen so far. The build is very robust and I do believe that it is waterproof (haven't tested it yet). When I fully charged the battery firstly it worked for about 12 hours? So yes, that is damn impressive and I strongly recommend this product. ### ⭐⭐⭐⭐ Voice amplifier *by A***N on 28 February 2026* Have not used it yet but tested it and seems ok. But it’s not as loud as I wanted it to be as my voice still seems small outdoors . I guess indoors will be sufficient. The Voice speaker headset not as comfortable as keeps moving whenever I move. Gentle movements works fine just no jarring or jumping movements. Will test again and update. Speaker is too heavy to clip on body so it has to be at least 1 meter away from body . Standing 3 meters away is still ok . ### ⭐⭐⭐⭐⭐ Great Product *by B***X on 30 July 2022* Useful and handy. Love it. Great use for hiking, just wear it around your body. Waterproof feature, great for outdoor use. Can be useful for karaoke and you can use a power bank for backup power. Great and useful tool. ## Frequently Bought Together - Wireless Voice Amplifier with Bluetooth 5.3 | 18W Portable PA System with Waist Clip, Waterproof Rechargeable Megaphone Microphone and Speaker for Teachers, Tour Guide, Presentation - W WINBRIDGE Voice Amplifiers Speaker Carry Case Cover Bag with Mesh Pocket Zip And Snap Hook Fit USB Cable Wall Charger Phone WB010 - WinBridge Portable Collar Clip Microphone 3.5mm Audio Compatible with All WinBridge Voice Amplifiers S6 --- ## 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.pe/products/421160912-bluetooth-voice-amplifier-speaker-waterproof-microphone-amplifier-wireless-portable-megaphone](https://www.desertcart.pe/products/421160912-bluetooth-voice-amplifier-speaker-waterproof-microphone-amplifier-wireless-portable-megaphone) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-07-07*