Monster S370 Portable Bluetooth Speaker

Portable: The Monster S370 is a compact Bluetooth outdoor speaker listing that highlights an integrated carabiner, IPX7 waterproofing and TWS pairing. Its dimensions and listed weight suit buyers prioritising a small carryable speaker, though the page does not provide battery-life or output-power figures.

At a glance

The product title claims an integrated carabiner for carrying or clipping the speaker.
IPX7 waterproofing and TWS pairing are listing claims, not independently verified here.
The listing gives dimensions of 10.3 x 4 x 8 cm and a weight of 310 g.
Push-button controls and stereo output mode are listed.

Price

$35.99Save 72%

Reference price: ~~$129.99~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Compact listed dimensions and an integrated carabiner claim make portability a central part of the offering.
Bluetooth connection and push-button controls are specified.

Technical specifications

11 specifications

Identity
Brand	Monster
Model	Monster S370

Connectivity and controls
Wireless connection listed	Bluetooth
Control methods listed	Push Button
Audio output mode	Stereo
Speaker type	Outdoor

Dimensions and installation
Dimensions listed	10.3 x 4 x 8 cm; 310 g

Colour and protection
Colour	Gray
Waterproof feature listed	Waterproof

Power and warranty
Battery listing	1 A batteries required. (included)
Warranty description	2 year

What to know before buying

Listing details to confirm

The listing's description refers to a Monster S33 Speaker although the title and model details identify the S370. It also gives dimensions as both 10.3 x 4 x 8 cm and 103D x 40W x 80H millimeters, while the battery entry says an included A battery is required without clarifying the battery type or whether it is rechargeable. IPX7 waterproofing, TWS pairing and the integrated carabiner appear in the title, but are not detailed in the technical specifications. Confirm the selected listing's model and exact configuration before purchase.

Who is it for?

A good fit for

Buyers seeking a small Bluetooth speaker for outdoor carry who value the listed carabiner and waterproofing claims.
Listeners who prefer a speaker with listed stereo output and physical push-button controls.

Less suited to

Buyers who need documented battery runtime, charging details or power output, which are not provided in the supplied specifications.
Buyers who need unambiguous confirmation of model identity or included battery configuration before ordering.

Monster S370 Portable Bluetooth Speaker · photo 2 — Additional product photo 2

Customer reviews on Amazon

4 / 5 · 13 ratings

5 stars52%52%
4 stars24%24%
3 stars0%0%
2 stars24%24%
1 star0%0%

The supplied evidence contains aggregate ratings but no customer-comment summary. The rating distribution is mostly five-star with the remainder four-star, but the small sample and lack of comments do not establish particular strengths, concerns or reasons for those ratings.

Frequently asked questions

Is the Monster S370 listed as waterproof?

The title claims IPX7 waterproofing and the details list it as waterproof. The supplied technical specifications do not give further protection-use conditions.

Does this speaker support TWS pairing?

TWS pairing is claimed in the product title, but pairing instructions or compatibility details are not supplied.

What are the listed dimensions and weight?

The product details state 10.3 x 4 x 8 cm and 310 g. Another dimensions field uses 103D x 40W x 80H millimeters, so the listing is inconsistent.

What battery life does the Monster S370 offer?

No battery runtime is provided. The listing says one A battery is required and included, but does not clarify the battery configuration.