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Monster
Monster S320 Portable Bluetooth Speaker

Monster S320 Portable Bluetooth Speaker

4· 42 ratings

Best price now

$35.99at WalmartObserved Nov 1, 2026, 1:59 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Quick answers

Where is the Monster S320 Portable Bluetooth Speaker cheapest?
At Walmart, for $35.99, as of our latest check.
Is the Monster S320 Portable Bluetooth Speaker at its lowest price?
Yes: $35.99 is the lowest price we've seen for it since October 30.
What do buyers say about the Monster S320 Portable Bluetooth Speaker?
Rated 4 out of 5 from 42 ratings.
Where can I buy the Monster S320 Portable Bluetooth Speaker?
3 stores we checked sell it, including Walmart, eBay, EveryMarket.

Monster S320 Portable Bluetooth Speaker prices at every store

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  • WalmartNew

    In stockSold by MCT Direct

    $35.99Observed Nov 1, 2026, 1:59 PM
    Visit store
  • eBayPre-owned

    In stock

    $60.00Observed Oct 31, 2026, 10:46 PM
    Visit store
  • eBayNew

    In stock

    $65.00Observed Nov 1, 2026, 1:58 PM
    Visit store

Also available at

  • WalmartCheck price at Walmart
  • EveryMarketCheck price at EveryMarket

Monster S320 Portable Bluetooth Speaker price history

$36.00$35.99
Oct 30Nov 1

Lowest price we've seen: $35.99 on Oct 31 at Walmart; highest $36.00 on Oct 30. Tracked across 3 stores since Oct 30.

From Walmart

  • 40W audio with 360° stereo sound effect, engineered by Noel Lee and the Monster Design Team
  • Bluetooth 5.0 with True Wireless Stereo (TWS) pairing of two speakers for 80W stereo surround sound
  • IPX7 waterproof rating: waterproof, shockproof and splash-proof
  • Endures rain, snow, dust, mud, sand and submersion; suited to outdoor or shower use
  • Rich bass, clear mids and vibrant highs for an immersive 360° sound
  • Up to 32 hours of continuous playing time at medium volume from a full charge
Returns
Free holiday returns until Jan 31
Shipping
Free shipping; arrives tomorrow when ordered within the stated window, shipped to Sacramento 95829

About the Monster S320 Portable 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.

Specifications

Outdoor
Yes
Frequency Response
140 MHz
Bluetooth
Bluetooth, Yes
Connectivity Technology
Bluetooth
Ports And Interfaces
3.5mm aux input
Wi-Fi
No
Assistant Support
No voice assistant functionality
Smart Functions
Dual-device connectivity
Speaker Placement
Portable
Audio Configuration
360-degree design
Audio Highlights
Surround Sound, Built-In Microphone, True Wireless Stereo Pairing
Audio Channels
Stereo
Max Output Power
40 Watts
Nominal Output Power
40 watts
Design Highlights
Portable
Material
Plastic, Fabric
Style
Portable2
Driver Size
2-inch
Driver Configuration
Omnidirectional
Driver Type
Dual drivers
Number Of Drivers
Dual
Weight
720 g
Depth
87 mm
color
BlackSource