Short answer: the Tozo PE1. It ranks #20 of 47 small speakers by sound quality, rated 3.5/5, at $19.97; the Monster Bluetooth Speaker ranks #31, rated 3.0/5, and costs $19.99, which makes this an easy call rather than a real tradeoff.
What the Tozo PE1 does well: Tozo PE1 uses 43.5mm. Watch for: Bass is limited by its 68Hz specification.
Why pick the Monster Bluetooth Speaker: A very light, IPX7-rated mini speaker with USB-C charging, aux and microSD playback, speakerphone support and TWS pairing. Watch for: Its tiny 36mm driver has very limited bass (about 95Hz at -10dB), elevated mids and rolled-off highs.
Buy the Tozo PE1. It is rated higher for sound quality than the Monster Bluetooth Speaker and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
If battery life is a priority, the Tozo PE1 is rated for 12 hours versus 6.5 hours for the Monster Bluetooth Speaker.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Tozo PE1 | Monster Bluetooth Speaker | |
|---|---|---|
| Price | $19.97 | $19.99 |
| Ranked | #20 of 47 in Small Size Portable Bluetooth Speakers | #31 of 47 in Small Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 68Hz | 95Hz |
| Battery Life | 12 hours (Specification says 32 hours, it is nowhere near that) (Manufacturer specified) | 6.5 hours (Manufacturer specified) |
| EQ | Yes | No |
| IP Rating | IPX8 | IPX7 |
| Party Mode | No | No |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | Pointing up |
| TWS | Yes | Yes |
| Weight | 0.5 lbs (248 g) | 0.4 lbs (185 g) |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Bluetooth Version | 5.4 | - |
| Frequency Response | 80Hz - 20kHz (Manufacturer specified) | - |
| Dimensions | 5.1” x 3.5” x 1.7” (129 x 90 x 44 mm) | Specifications vary by model |
| Drivers | 43.5mm | 1.4” (36mm) full-range driver |
| Amplifier Power | 10W | 5W |
| Digital Aux Input | No | No |
| MicroSD Playback | - | Yes |
| Strap | - | Yes (carabiner hook, suction cup) |
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More worthwhile head-to-heads for Tozo PE1:
- Tozo PE1 vs Tribit Stormbox Micro 2
- Soundcore Boom Go 3i vs Tozo PE1
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- Tozo PE1 vs Tribit Stormbox Micro
- Tribit Stormbox Micro 3 vs Tozo PE1
Prices on this page were last checked September 26, 2026 at 11:14 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Tozo PE1: $19.97 Amazon eBay
Pros: Tozo PE1 uses 43.5mm. Its 248 g, claimed 12 hours (Specification says 32 hours, it is nowhere near that) (Manufacturer specified) battery life, IPX8 protection and mono playback make it a practical option for its intended room or portable use. A good value for the money. Measured bass extension of 68Hz (-10dB).
Cons: Bass is limited by its 68Hz specification. Bass does not reach as deep as the top-ranked speakers.
Full Tozo PE1 review and specifications →
| Amplifier Power | 10W |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 68Hz |
| Battery Life | 12 hours (Specification says 32 hours, it is nowhere near that) (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 5.1” x 3.5” x 1.7” (129 x 90 x 44 mm) |
| Drivers | 43.5mm |
| EQ | Yes |
| Frequency Response | 80Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX8 |
| Omnidirectional | Pointing up |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 0.5 lbs (248 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Monster Bluetooth Speaker: $19.99 Amazon eBay
Pros: A very light, IPX7-rated mini speaker with USB-C charging, aux and microSD playback, speakerphone support and TWS pairing. It is a convenient rugged travel speaker when water resistance and small size matter more than bass. Measured bass extension of 95Hz (-10dB).
Cons: Its tiny 36mm driver has very limited bass (about 95Hz at -10dB), elevated mids and rolled-off highs. It cannot deliver the scale, detail or battery endurance of stronger small-speaker rivals, and no app or EQ is available to improve the tuning.
Full Monster Bluetooth Speaker review and specifications →
| Amplifier Power | 5W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 95Hz |
| Battery Life | 6.5 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | Specifications vary by model |
| Drivers | 1.4” (36mm) full-range driver |
| EQ | No |
| IP Rating | IPX7 |
| MicroSD Playback | Yes |
| Omnidirectional | Pointing up |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (carabiner hook, suction cup) |
| TWS | Yes |
| Weight | 0.4 lbs (185 g) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
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