Monster S320 Bluetooth Speaker, 40W True Wireless,360° Stereo Sound Effect,IPX7 Waterproof, 32 Hour Playing Time,Suitable for Outdoor Portable Speaker (Black).
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Availability:
Only 1 left in stock, order soon!
Arrives
Nov 13 – Nov 19
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Style: portable2
Features
- Bluetooth Speaker- Monster S320 Bluetooth speaker is designed and engineered by Noel Lee and the Monster Design Team in the USA. From 40 years of sound engineering fine-tuned to deliver the most impactful music experience possible, with 40W audio performance, 360 stereo sound effect, truly enjoy the surround sound of the cinema, a truly unparalleled listening experience.
- True Wireless Speaker-True Wireless Stereo Dual Pairing Wireless Speaker Bluetooth 5.0, Easily pair two portable speakers, Upgrade 80W stereo surround sound immediately. realizing 360-degree true dual enhanced stereo sound, unlock the high-quality music texture and make the spirit of your spark burst, meeting the requirements of your friends for partying.
- IPX7 Waterproof Speaker - Monster Portable Bluetooth Speakers is an excellent speaker. completely water-proof, shockproof and splash-proof rain, snow, dust, even completely immersed in water for, mud and sand, which is perfect for participating in most outdoor activities, like swimming, boating, skiing, mountain climbing, hiking and rock climbing. This waterproof speakers can also be used as shower speakers in the bathroom if you like.
- True 360Stereo - Amazing Bass Sound, Stereo sound with full bassthe speaker delivers immersive sound with rich bass, mids and highs, and dynamic sound.in the same way as the live concert performance. You will like this Stereo Sound speakers.
- 32-Hour Playing Time- Fully charged and medium volume can be played 32 hours, hours of continuous music playtime or make calls time(built in Microphone) Enjoy music day to night never stop. Let your work and study no longer be boring. makes your purchase absolutely risk-free. Any questions please feel free to contact us, we will provide a premium service within 24 hours.
Brand: Monster
Speaker Maximum Output Power: 40 Watts
Frequency Response: 140 MHz
Connectivity Technology: Bluetooth
Audio Output Mode: Surround
Mounting Type: Free Standing
Material: Fabric or Plastic
Model Name: s320
Speaker Type: Outdoor
Special Feature: Portable, Waterproof
Recommended Uses For Product: For Music Players, For Smartphones or Tablets
Surround Sound Channel Configuration: 3.0 or 3.1
Color: Black
Included Components: 1 Bluetooth Speaker, 1 Charging Cable, Quick Start Guide
Product Dimensions: 5.3"D x 2"W x 5"H
Is Waterproof: True
Warranty Type: Limited
Number of Items: 1
Control Method: Touch
Wireless Communication Technology: Bluetooth
Speaker Size: 1 Inches
Power Source: Battery Powered
Water Resistance Level: Waterproof
Number of Batteries: 1 A batteries required. (included)
Audio Driver Type: Dynamic Driver
Bluetooth Range: 10 Meters
Subwoofer Connectivity Technology: Wireless
Includes MP3 player?: No
Number Of Circuits: 1
Specific Uses For Product: Outdoor activities, parties, and shower speaker
Style: portable2
Indoor/Outdoor Usage: Outdoor
Global Trade Identification Number: 68
Manufacturer: Monster
Item Weight: 1.57 pounds
Item model number: s320
Batteries: 1 A batteries required. (included)
Date First Available: May 21, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 13 – Nov 19
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Style: portable2
I’ve tested a few Bluetooth speakers in this price range, but the Monster S320 really stands out for both audio quality and practicality. The first thing I noticed was how solid and well-built it feels right out of the box. It’s got some heft to it—not bulky, but sturdy enough that it doesn’t feel cheap or fragile. I’ve tossed it into a beach bag and taken it on hikes without worrying. Sound-wise, it delivers way above expectations. I mainly use it for backyard hangs, BBQs, and small gatherings, and the 40W output easily fills the space without distortion. The 360° sound is legit—no matter where people are standing around it, the music sounds clear and full. Bass is strong and punchy, even on lower volumes, which surprised me for a speaker this size. I played everything from acoustic to hip-hop to classic rock, and it handled all genres really well. Bluetooth connection has been rock solid. Pairing was quick, and once connected, I’ve had no dropouts—even when I walk away with my phone or leave it in another room. The range is impressive; I’ve gone well over 30 feet outdoors and the connection stayed strong. I’ve used both an iPhone and a Samsung tablet with it, and switching between them is seamless. Battery life is a real win. I’ve gotten close to the advertised 32 hours on medium volume. On one camping trip, I played music off and on for two days and didn’t need to recharge until I got home. Also, it charges back up fairly quickly compared to some other speakers I’ve used. The waterproofing holds up. I’ve used it poolside, accidentally left it out during a light rain shower, and even rinsed off some dirt under the tap—no issues. The IPX7 rating isn’t just for show. If I had to nitpick, I’d say the buttons could be slightly more visible in low light, but that’s a tiny thing. Overall, for the price, this speaker feels like a steal. It checks all the boxes for portability, durability, battery life, connectivity, and seriously good sound. Highly recommend it for anyone who wants a speaker that works just as well at home as it does on the go.
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Reviewed in the United States on August 24, 2025 by Amazon Customer
Style: portable2
I was really impressed with this Bluetooth speaker from the moment I turned it on. The sound is clear, the bass is surprisingly deep for its size, and it easily fills the room. Pairing with my phone took only a few seconds, and the connection has been rock solid with no drops. The battery life is excellent—I’ve used it for hours outdoors without needing to recharge. It’s also lightweight and easy to carry, making it perfect for travel, picnics, or just moving around the house. The build feels sturdy and durable, and the water-resistant feature gives me peace of mind when I use it near the pool.
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Reviewed in the United States on September 18, 2025 by TIA
Style: S320
Decent speaker. The build feels tough and has a satisfying bit of weight that makes it feel premium rather than plasticky. No issues with pairing devices and it reconnects automatically every time. The sound leans slightly warm, with enough low end to make small gatherings or showers feel lively without getting distorted. At about 60–70% volume, it’s the sweet spot, crisp vocals, decent punch, and no harshness. Push it higher and it does lose a bit of definition, but that’s normal for this category. Battery life’s solid; I’ve been using it off and on for several days before needing to recharge. Have not tested the waterproofing but I have no reason to doubt it. Not the loudest on the market, but consistently enjoyable to listen to.
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Reviewed in the United States on October 18, 2025 by Kindle reader
Style: portable2
This Monster S320 Bluetooth speaker really impressed me, it is powerful. The Sound is loud, clear, and full, with bass that feels just right without being overwhelming, It's easy to connect through Bluetooth and stays connected without any drops. The battery lasts a long time- perfect for using all day at home, or while travelling. I like that it's waterproof and solid built, so I don't have to worry about using it outdoors. It's portable, stylish and works for both music and calls. For the price, it's an excellent buy, Highly recommended.
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Reviewed in the United States on August 8, 2025 by Pranathi Yeruva Pranathi Yeruva
Style: portable2
I bought the Monster speaker for outdoor use, and it has exceeded my expectations. The sound is loud, clear, and well-balanced, with surprisingly strong bass for its size. The 360° stereo effect really fills the space, making it great for gatherings or just relaxing outside. It’s lightweight and easy to carry, and the waterproof design gives me peace of mind when using it by the pool or at the beach. The battery life is also impressive—I’ve used it for several long sessions without needing to recharge.
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Reviewed in the United States on August 3, 2025 by Prerak