Skip to main contentSkip to footer

Explore more like this

Slide 1 of 10

Overview

Enjoy powerful 40W sound with the Monster Shock Plus portable Bluetooth speaker, featuring deep bass, up to 20 hours of playtime, IPX6 water resistance, AUX, TF card and TWS pairing.

Monster Shock Plus 40W Portable Bluetooth 6.0 Speaker with Deep Bass, 20-Hour Playtime, IPX6 Waterproofing, AUX, TF Card and TWS

Model: Monster S21
Web Code: 19914863
Sold and shipped by | 4.2 seller rating (242 reviews)

Available for deliveryAvailable online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.

Seller Return Policy

Read return policy

Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

What's included:

  • ✅ 1 x Monster Shock Plus Portable Bluetooth Speaker✅ 1 x USB Charging Cable✅ 1 x AUX Audio Cable if included by the manufacturer✅ 1 x User Manual

The Monster Shock Plus portable Bluetooth speaker delivers powerful 40W audio through a dual-speaker system designed for rich, clear sound and enhanced bass. Bluetooth 6.0 provides fast and stable wireless connectivity with compatible smartphones, tablets and laptops, while TWS pairing allows two compatible speakers to connect for a wider stereo listening experience. The rechargeable battery provides up to 20 hours of playback, depending on volume and usage conditions. With IPX6 water resistance, AUX input and TF card support, it is suitable for home entertainment, outdoor activities, parties, camping and travel.

✅ Powerful 40W dual-speaker system delivers loud and immersive audio

✅ Deep bass performance adds impact to music, movies and party playlists

✅ Bluetooth 6.0 supports fast and stable wireless connections

✅ TWS pairing connects two compatible speakers for stereo sound

✅ Provides up to 20 hours of playback per charge

✅ IPX6 water-resistant design helps protect against splashes and rain

✅ AUX input supports wired playback from compatible audio devices

✅ TF card slot allows direct music playback without a connected phone

✅ Rechargeable portable design is ideal for home, outdoor and travel use

✅ Suitable for parties, patios, camping, picnics and everyday listening

✅ Practical gift idea for music lovers, travellers and outdoor enthusiasts

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping on all orders over $100 (before taxes, fees, and promo codes).

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
Product Category
Home theatre audio products
Return/Exchange Period
30 days
Condition
Opened

Learn more about returning a Marketplace product