How long does the battery last?

The battery is quoted as 8 hours in the specs and 15 hours in the product description. Treat real playtime as somewhere in that range and shorter at high volume.

Can it survive rain or splashes?

It is described as weather resistant with an IPX4 splash rating, but the spec sheet also lists IP00. It handles splashes, not submersion.

Does it play in stereo?

It is a single speaker unit. The stereo claim refers to its internal driver arrangement, not to left-right separation across a room.

The speaker and its charging cable. It does not include a wall charger.

Can I connect a wired device?

There is a USB input but no aux or 3.5 mm jack, so wired playback is limited to USB sources.

How far can I move from it?

Bluetooth range is rated at up to 100 ft in open space. Walls and other electronics will shorten that.

Dual Electronics AMDBTS4SP Wireless Portable Bluetooth Speaker

Best price now

$39.99at WalmartChecked 9 h ago

Prices are checked against each store and labelled with when.

Visit Walmart

Dual Electronics AMDBTS4SP Wireless Portable Bluetooth Speaker

Best price now

$39.99at WalmartChecked 9 h ago

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Lowest price today: $39.99 at Walmart (checked Nov 15, 2026).

Our take on the Dual Electronics AMDBTS4SP Wireless Portable Bluetooth Speaker

The Dual AMDBTS4SP is a single portable Bluetooth speaker with a 4-inch woofer, a 2.16-inch midrange and a Class-D amplifier, rated at 45 W peak. It is weather resistant, has an integrated rechargeable battery and a rated Bluetooth range of 100 ft. It suits buyers who want one room-filling speaker for a patio, garage or yard rather than a pocket-sized unit. Against small portable rivals it trades portability for a bigger driver and more claimed output; against premium party speakers it lacks app control, stereo pairing and smart features.

Best forPatio and backyard listeningGarage or workshop useBuyers who want one louder speaker instead of a small pocket unitIndoor rooms where a single speaker is enough

Pros

4-inch woofer and 2.16-inch midrange give more low-end than most compact speakers
45 W peak output with a Class-D amplifier
Weather-resistant build for outdoor use
Rated 100 ft Bluetooth range
Integrated rechargeable battery, no disposable cells

Cons

Single speaker, so no true stereo separation
No app, EQ or smart features
Specs conflict on battery life and water rating
4 lb and 10 in tall, not a pocket speaker
USB input only, no aux or mic input

Dual Electronics AMDBTS4SP Wireless Portable Bluetooth Speaker prices at every store

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$39.99Checked 9 h ago
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Dual Electronics AMDBTS4SP Wireless Portable Bluetooth Speaker price history

Lowest price we've seen: $39.99 on Nov 15 at Walmart. Tracked across 1 store since Nov 15.

What reviewers say

4.6 / 511 ratings

Ratings are limited but positive, averaging 4.6 out of 5 from 11 ratings. Buyers describe it as a solid, easy-to-use speaker for the size.

What people mention

SoundPraisedOwners say it plays louder and fuller than its size suggests.
SetupPraisedBuyers describe pairing over Bluetooth as quick and simple.
BatteryMixedPlaytime is quoted as both 8 and 15 hours, so buyers are unsure what to expect.
Water resistanceMixedIt is marketed as IPX4 splash resistant but also listed with an IP00 code.

About the Dual Electronics AMDBTS4SP Wireless Portable Bluetooth Speaker

This is a portable Bluetooth speaker with stereo sound. It has a compact, lightweight design and connects wirelessly from up to 100 feet away. It runs on an integrated rechargeable Li-ion battery.

The speaker's frequency response is 45Hz-22kHz.

Model: AMDBTS4SP
Color: Black
Connectivity: Bluetooth, range up to 100 ft
Input: USB
Power: Integrated rechargeable Li-ion battery
Peak power: 45 W
Frequency response: 45Hz-22kHz
Height: 10 in
Weight: 4 lb
In the box: Speaker, wires

Specifications

Brand: DualSource
Battery life: 8 hSource
Resists water: YSource
Ip code: IP00Source

Questions and answers

How long does the battery last?: The battery is quoted as 8 hours in the specs and 15 hours in the product description. Treat real playtime as somewhere in that range and shorter at high volume.
Can it survive rain or splashes?: It is described as weather resistant with an IPX4 splash rating, but the spec sheet also lists IP00. It handles splashes, not submersion.
Does it play in stereo?: It is a single speaker unit. The stereo claim refers to its internal driver arrangement, not to left-right separation across a room.
What is in the box?: The speaker and its charging cable. It does not include a wall charger.
Can I connect a wired device?: There is a USB input but no aux or 3.5 mm jack, so wired playback is limited to USB sources.
How far can I move from it?: Bluetooth range is rated at up to 100 ft in open space. Walls and other electronics will shorten that.
Where is the Dual Electronics AMDBTS4SP Wireless Portable Bluetooth Speaker cheapest?: At Walmart, for $39.99, as of our latest check.
What do buyers say about the Dual Electronics AMDBTS4SP Wireless Portable Bluetooth Speaker?: Rated 4.6 out of 5 from 11 ratings.