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Monster
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In Stock
| Brand | Monster |
|---|---|
| Speaker Maximum Output Power | 60 Watts |
| Connectivity Technology | Auxiliary, Bluetooth, Wi-Fi |
| Audio Output Mode | Stereo |
| Mounting Type | Tabletop Mount |
| material | Plastic |
|---|---|
| model_name | Monster Shock Plus |
| speaker_type | Outdoor |
| special_feature | Bass Boost, Built In Microphone, Lightweight, Portable, Waterproof |
| recommended_uses_for_product | For Computers, For Gaming Consoles, For Music Players, For Smartphones or Tablets, For Surround Sound Systems, For Televisions |
| compatible_devices | Compatible with any Bluetooth-enabled device, such as computers, smartphones or tablets, MP3 Player, TV, Laptop |
| unit_count | 1.0 Count |
| surround_sound_channel_configuration | 2.0 |
| color | Black |
| included_components | 1X AUX IN Cable, 1X Lifting Rope, 1X Monster Bluetooth Speaker, 1X Quick Start Guide&Warning Card, 1X USB-C Charging Cable |
| product_dimensions | 2.99"D x 10.08"W x 4.02"H |
| item_weight | 1.54 pounds |
| is_waterproof | True |
| warranty_type | Limited |
| maximum_range | 33 Feet |
| number_of_items | 1 |
| control_method | Push Button |
| wireless_communication_technology | Bluetooth, Wi-Fi |
| speaker_size | 3.5 Millimeters |
| power_source | Battery Powered |
| water_resistance_level | Water Resistant |
| customer_package_type | Standard Packaging |
| number_of_batteries | 1 12V batteries required. (included) |
| audio_driver_type | Dynamic Driver |
| bluetooth_range | 33 Feet |
| audio_driver_size | 40 Millimeters |
| subwoofer_connectivity_technology | Wireless |
| specific_uses_for_product | Business, Home Theatre, Travel |
| chassis_size | Ported |
| style | Portable S21 Speaker-Black |
| bluetooth_version | 6.0 |
| indooroutdoor_usage | Indoor, Outdoor |
| manufacturer | Monster |
| shape | Rectangular |
| item_model_number | Monster S21 |
| batteries | 1 12V batteries required. (included) |
| best_sellers_rank | #113 in Portable Bluetooth Speakers #1,312 in MP3 & MP4 Player Accessories |
| date_first_available | December 25, 2025 |
Product video 1
Customers say
Customers find the portable speaker well-built and appreciate its great sound quality.
The Monster Shock Plus delivers powerful 30W sound with deep bass in a compact, rugged design. Bluetooth connectivity is fast and stable, battery life easily lasts all day, and IPX6 waterproofing makes it perfect for outdoor use. Great value for parties, travel, and everyday listening. Read more
Awesome it’s small but really strong, the sound is great, pretty good quality and long battery life. Read more
This thing is loud! Great bass and highs. Hood range from the device. Nice construction with high quality plastic hybrid shell. The price point is higher than other speakers but you can feel and hear why. Monster name still holds weight. Read more
This is a nice speaker! my adult son who is a music lover liked it so much that he wanted me to give it to him. It has a good bass. It was easy to connect the Bluetooth and it stayed connected. The range is good too. The speaker kept a charge for the whole party which was around six hours. I like this one much better than my old speaker. The sound, connection, battery and range are all better. I am happy with this purchase. Read more
The media could not be loaded. This unit is well built. Easy Bluetooth pairing. Sound quality is good, no distortion and we clearly hear voices. Very easy to use. Great product. Read more
Good sound and its load like itI like it Read more
Mine broke right away Used it once for about an hour and I couldn't get it's power on or charge I think mine was just e defective' cause other reviews look great So that may not be indicative to the average user's experience Read more
Not a terrible speaker by any means. But it’s most definitely not worth the $100+ that it’s currently listed for. I purchased it when it was on sale recently (I think around $36). If you’re looking for sound quality and heavy bass, this is not the speaker for you. Also, the Bluetooth range doesn’t seem to be great. I noticed the music cutting in and out when my husband walked down the hallway with his phone. I haven’t had it long enough or used it enough yet to review the battery life, but the size is okay, works great in our bathroom and will be nice to have outdoors. Overall, definitely a $30 speaker. Don’t pay full price for this thing. Read more