# Monster Atomic Pebble D139 Portable Bluetooth Speaker, 20 W

The Monster Atomic Pebble D139 is a portable mono Bluetooth speaker rated at 20 watts, with a claimed 15-hour playback time at 30%–50% volume. Its IP56 claim and lanyard design suit portable listening, while the listed dimensions conflict with another dimensions entry, so confirm the size before buying.

- [Original product page](https://loonieperks.com/product/monster-atomic-pebble-d139-portable-bluetooth-speaker)
- [View offer](https://loonieperks.com/visit/monster-atomic-pebble-d139-portable-bluetooth-speaker)
- Market: CA
- Language: en-CA
- Currency: CAD
- Brand: Monster
- Model: D139
- Category: Electronics > Speakers & Soundbars > Speakers
- Price: 39.99 CAD
- Previous price: 189.99 CAD
- Discount: 79%
- Price checked: 2026-11-13T12:23:15.450Z
- Rating: 4.7 / 5
- Reviews: 16

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Rated 20 watts with mono audio output.
- The listing claims up to 15 hours of playback at 30%–50% volume, so louder use may not match that stated duration.
- Bluetooth 6.0 is listed, along with auxiliary and USB connectivity.
- IP56 dust and water protection and an included portable rope are claimed.

## Pros

- A lanyard-style rope and battery-powered design support carrying the speaker between locations.
- The manufacturer claims IP56 dust and water protection for use around dust and splashes.
- Hands-free calling and push-button controls are listed.

## Specifications

### Identity and audio
- Brand: Monster
- Model: D139
- Maximum output power: 20 watts
- Audio output mode: Mono
- Speaker type: Portable Speaker
- Enclosure material: Plastic
- Colour: D139 Black
### Connectivity and controls
- Wireless connection listed: Bluetooth
- Bluetooth version: Bluetooth 6.0
- Other connectivity listed: Auxiliary, Bluetooth, USB
- Control method: Push Button
- Claimed Bluetooth range: 33 feet
- Listed maximum range: 20 meters
### Power and battery
- Power configuration: Battery Powered
- Playback time claim: 15 hours of playback time \(volume 30% -50%\)
- Battery listing: 1 A batteries required. \(included\)
### Dimensions and installation
- Mounting type listed: Floor Standing
- Dimensions and weight: 2.54 x 2.54 x 2.54 cm; 310 g
- Alternate dimensions listing: 3D x 10W x 12H centimetres
### Materials and protection
- Water resistance listed: Water Resistant
- Protection rating claim: IP56 Dustproof and Waterproof

## Before you buy

- Listing details are inconsistent: the dimensions appear as both "2.54 x 2.54 x 2.54 cm; 310 g" and "3D x 10W x 12H centimetres." Bluetooth range is listed as both 33 feet and 20 meters, and protection is described as IP56 as well as simply water resistant. Confirm the selected listing's dimensions, range and protection claims before relying on them. The 15-hour figure is stated only for 30%–50% volume.
- The 100+ speaker-pairing statement is a manufacturer claim and refers to compatible Monster Atomic series speakers. The listing does not establish that this unit plays in stereo with another speaker.

## In the box

- Monster Atomic Pebble Speaker ×1 (Included)
- Portable rope ×1 (Included)
- Type-C charging cable ×1 (Included)
- User manual ×1 (Included)

## A good fit for

- Listeners wanting a battery-powered mono speaker for portable, everyday music playback.
- Buyers who value an included carrying rope and a stated dust-and-splash protection rating.

## Less suited to

- Buyers seeking confirmed stereo output or a dependable size specification without first resolving the listing's conflicting dimensions.
- Anyone who needs the claimed 15-hour runtime at high volume, since the stated condition is 30%–50% volume.

## Customer feedback

Customer feedback is positive about overall quality and sound, including reports that audio stays clear at higher volumes and that customers would buy again. This is encouraging for ordinary listening, but the feedback does not establish performance for every setting, and the supplied rating sample is modest.
- Positive themes: Customers report positive sound quality and overall quality.
- Positive themes: Feedback says the audio remains clear without distortion at higher volumes.

## Frequently asked questions

### How long does the Atomic Pebble D139 battery last?
The listing claims 15 hours of playback at 30%–50% volume. It does not give a runtime for louder listening.
### Is this speaker suitable for wet or dusty conditions?
The listing claims IP56 dust and water protection and describes the speaker as water resistant. Treat that as a manufacturer claim, not a guarantee for immersion.
### Does the D139 provide stereo sound?
The listed audio output mode is Mono. The multi-speaker pairing claim does not by itself establish stereo playback.
### What comes in the box?
The listed contents are one Monster Atomic Pebble speaker, one portable rope, one Type-C charging cable and one user manual.

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## Images

![Monster Atomic Pebble D139 Portable Bluetooth Speaker, 20 W — 1](https://loonieperks.com/i/02RgX1E1xWmFlp1b-y8m0uHhe1AfEYoyrKA5mMxKzHvWw7jp8DiCVXq40OCCJwg4GoJassM_1i4v-2inXiMhzLbz52FgApcE6xgWuZFiak3PJ1KXzH5BO8RE.jpg)

![Monster Atomic Pebble D139 Portable Bluetooth Speaker, 20 W — 2](https://loonieperks.com/i/DuauYq1Q1EHplg1Q379_ZvSk3XYIQ_SEzGnhzWR3b6MeXK-WKJjfCaBd2ctaHUbwfK7elCK_bUqi_kmqVBXculTwN4eUcgTJRtDpk-9SsQ-VIb3Zf4hFuQfv.jpg)

![Monster Atomic Pebble D139 Portable Bluetooth Speaker, 20 W — 3](https://loonieperks.com/i/bx58L0a78wTtbZw93IyRo0F6I7zSyG6mcgzDmLgBolSO6xi9W3ZTOGzFJFjRIv2mkdTpL0AG7OfZyqaI7-UzPa-P7DA6I5-x8mv4VywDNWt2dcy5AOp6W-Oi.jpg)

![Monster Atomic Pebble D139 Portable Bluetooth Speaker, 20 W — 4](https://loonieperks.com/i/a33IbJDe8P54auSQDWHY05vF5fGYTKNkTcadiA_yw7WmVwDGok4vD3B1qL-Im6Izgctv5lmxCeiR_kTwv8r1i9JwFVhlB0qyYX7NhcuCXx8snvgzaBhati1u.jpg)

![Monster Atomic Pebble D139 Portable Bluetooth Speaker, 20 W — 5](https://loonieperks.com/i/ph4O_miujrglYWDhRvXEATc5kxAYjG2YMO1_sQMF_8UpPWCBAPUWMGASlOKkw7Rnq4Gh4mNWLB8sN1LEaTlzU7sYfIy4tXEiUKOxRSci3UC5RIK7fN5sqmm7.jpg)

![Monster Atomic Pebble D139 Portable Bluetooth Speaker, 20 W — 6](https://loonieperks.com/i/gnFQnyDoB3rXIJN2vMljdToG0_nSt3FfpyomW_-KaENc9w7-Z0Zc5dQMkHiohiquk8e_6qWUBwVa6l79bNhFvlOF4z-yE4b1bonNTs2WTdocEQtPdjOo__m0.jpg)

![Monster Atomic Pebble D139 Portable Bluetooth Speaker, 20 W — 7](https://loonieperks.com/i/nWbWIKvKbXneN_rgf1NzkIjLmjsbAB4AdTZFpP6cAHmaI_ntq9KnpfNCNaQq0gGlCML9RTiXixPMbRxijR9M4gLmNBBFbp5hwC0bv9FWhCwiy2uxxKYBrhnQ.jpg)