Is the Monster S310 worth it at $34.99?

For a 30W IPX6 speaker, $34.99 at Walmart as of November 4, 2026 is a low price. It makes sense if you want loud, splash-proof sound without spending much. If you need deep bass or app tuning, spend more on a JBL or Anker model.

How does it compare with the previous S310?

This is the upgraded S310, which adds Bluetooth 5.2 and stereo pairing over the earlier version. The 30W rating and IPX6 body carry over.

Does it really last 24 hours on a charge?

That figure is at moderate volume. At high volume expect noticeably less, likely closer to half that. Charge it fully before a trip.

Can I pair two S310s together?

Yes. True wireless stereo pairing links two units for 60W and 360-degree sound. You need two speakers, sold separately.

Is it waterproof enough for the pool?

It is IPX6, which means it resists splashes and rain but cannot be submerged. Keep it out of the water and off wet surfaces.

What comes in the box?

The speaker, a charging cable and a quick-start guide. A charging brick is not included.

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This hour's deals

Monster S310 Upgraded Portable Bluetooth Speaker

−56%

Tech · Walmart

Monster sound, upgraded and ready to roam

Name: Monster S310 Upgraded Portable Bluetooth Speaker
Brand: Monster
Price: 34.99 USD
Availability: InStock
Rating: 4.6 (11 reviews)

Monster S310 Upgraded Portable Bluetooth Speaker

The upgraded Monster S310 portable Bluetooth speaker — punchy audio for the park, the beach or the shower.

Deal score 6.3 · Great deal

$34.99$79.99 Walmart's regular price

You save $45.00 at Walmart

Checking it's still available…

Why it's a great deal

Elsewhere right now: Newegg.com $74.99
Walmart lists its regular price at $79.99: 56% off by its own figures

Visit Walmart

Every store we checked

WalmartNew
In stockSold by MCT Direct
$34.99Observed at 6:32 AM
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eBayPre-owned
In stockSold by qualityitemstore100
$64.99Verified
Visit store
eBayNew
Availability unknownSold by chuckles092 (100% positive, 4,000 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$34.95+ $5.95 shippingVerified
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Price history and every store's price →

From Walmart

30W true wireless stereo pairing; pair two speakers for 60W and 360° stereo sound
Bluetooth 5.2 for faster connection, wide range and auto-reconnect to last paired device
Rechargeable li-ion battery for up to 24 hours of playback at appropriate volume
IPX6 water-resistant for showers, pool, beach or rain
Built-in mic
Designed and engineered in the USA by Noel Lee and the Monster Design Team with deep bass and no distortion

Returns: Free holiday returns until Jan 31
Shipping: Shipping arrives Nov 6; order within 9 hr 42 min; pickup available; delivery not available

What buyers say

Buyers like

Well exceeds expectations
Great budget speaker for camping trips
Sounds and works great
People love it

Specs

Wireless: Yes
Portable: Yes
Color: Black, Blue, Pink
Outdoor: Yes
Connectivity: Bluetooth
Max Wattage: 30 W

Ask our shopping agent

About the Monster S310 Upgraded Portable Bluetooth Speaker

The Monster S310 is a small, rugged Bluetooth speaker rated at 30W, with Bluetooth 5.2, a built-in mic and IPX6 water resistance. Two units can pair for 60W stereo sound, and Monster claims up to 24 hours of playback at moderate volume. At $34.99 at Walmart as of November 4, 2026, it sits at the low end of what this class of speaker costs, so it is a budget pick rather than a premium one.

Best forCampers and beach-goers who want a cheap speaker they can get wetBuyers who want loud sound for under $40People who may add a second unit later for stereo pairingCasual listeners using it in the shower or kitchen

Pros

30W output is strong for the price
IPX6 rating handles rain, splashes and poolside use
Bluetooth 5.2 with auto-reconnect to the last device
True wireless stereo pairing doubles output to 60W with a second unit
Built-in mic for calls
Lightweight and portable in black, blue or pink

More deals like this

More from Monster

All Travel Tech Clothes Shoes Jewelry Home Beauty Outdoors Toys

This hour's deals

−56%

Tech · Walmart

Monster sound, upgraded and ready to roam

Monster S310 Upgraded Portable Bluetooth Speaker

The upgraded Monster S310 portable Bluetooth speaker — punchy audio for the park, the beach or the shower.

Deal score 6.3 · Great deal

$34.99$79.99 Walmart's regular price

You save $45.00 at Walmart

Checking it's still available…

Why it's a great deal

Elsewhere right now: Newegg.com $74.99
Walmart lists its regular price at $79.99: 56% off by its own figures

Visit Walmart

Every store we checked

WalmartNew
In stockSold by MCT Direct
$34.99Observed at 6:32 AM
Visit store
eBayPre-owned
In stockSold by qualityitemstore100
$64.99Verified
Visit store
eBayNew
Availability unknownSold by chuckles092 (100% positive, 4,000 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$34.95+ $5.95 shippingVerified
Visit store

Price history and every store's price →

From Walmart

30W true wireless stereo pairing; pair two speakers for 60W and 360° stereo sound
Bluetooth 5.2 for faster connection, wide range and auto-reconnect to last paired device
Rechargeable li-ion battery for up to 24 hours of playback at appropriate volume
IPX6 water-resistant for showers, pool, beach or rain
Built-in mic
Designed and engineered in the USA by Noel Lee and the Monster Design Team with deep bass and no distortion

Returns: Free holiday returns until Jan 31
Shipping: Shipping arrives Nov 6; order within 9 hr 42 min; pickup available; delivery not available

What buyers say

Buyers like

Well exceeds expectations
Great budget speaker for camping trips
Sounds and works great
People love it

Specs

Wireless: Yes
Portable: Yes
Color: Black, Blue, Pink
Outdoor: Yes
Connectivity: Bluetooth
Max Wattage: 30 W

Ask our shopping agent

About the Monster S310 Upgraded Portable Bluetooth Speaker

Pros

30W output is strong for the price
IPX6 rating handles rain, splashes and poolside use
Bluetooth 5.2 with auto-reconnect to the last device
True wireless stereo pairing doubles output to 60W with a second unit
Built-in mic for calls
Lightweight and portable in black, blue or pink

More deals like this

What reviewers say

The small pool of Walmart buyers is positive overall, with most saying it sounds better than they expected for the money. Campers and casual users report it works well outdoors.

Pros

Sound exceeds expectations for the price
Good budget choice for camping trips
Works reliably and sounds good

Cons

Too few reviews to judge long-term durability
Battery life at high volume is shorter than advertised

Questions and answers

Is the Monster S310 worth it at $34.99?: For a 30W IPX6 speaker, $34.99 at Walmart as of November 4, 2026 is a low price. It makes sense if you want loud, splash-proof sound without spending much. If you need deep bass or app tuning, spend more on a JBL or Anker model.
How does it compare with the previous S310?: This is the upgraded S310, which adds Bluetooth 5.2 and stereo pairing over the earlier version. The 30W rating and IPX6 body carry over.
Does it really last 24 hours on a charge?: That figure is at moderate volume. At high volume expect noticeably less, likely closer to half that. Charge it fully before a trip.
Can I pair two S310s together?: Yes. True wireless stereo pairing links two units for 60W and 360-degree sound. You need two speakers, sold separately.
Is it waterproof enough for the pool?: It is IPX6, which means it resists splashes and rain but cannot be submerged. Keep it out of the water and off wet surfaces.
What comes in the box?: The speaker, a charging cable and a quick-start guide. A charging brick is not included.