Short answer: the TOZO PE1. It ranks #21 of 62 small speakers by sound quality, rated 3.5/5, at $22.99; the Monster Bluetooth Speaker ranks #39, rated 3.0/5, at $19.99. With prices this close, go by the sound-quality ranking rather than the cost.
The TOZO PE1 is the better-sounding, deeper-bass option. A very cheap, light mini speaker with full waterproofing, a carabiner and app EQ. Its bass reaches about 68Hz before falling 10dB, against 95Hz for the Monster Bluetooth Speaker. It is rated for 12 hours of battery against 6.5 for the Monster Bluetooth Speaker. It has an adjustable EQ, which the Monster Bluetooth Speaker lacks. Watch for: Battery life is about 12 hours in use, far short of the claimed 32 hours.
The Monster Bluetooth Speaker is the lighter choice. A very cheap, light waterproof travel speaker with USB-C charging, aux and microSD playback, and stereo pairing. At 0.4 lbs (185 g) it weighs noticeably less than the TOZO PE1 at 0.5 lbs (248 g). It keeps a wired aux input, which the TOZO PE1 lacks. 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, and saving $3 with the Monster Bluetooth Speaker does not make up for the sound-quality gap.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| TOZO PE1 | Monster Bluetooth Speaker | |
|---|---|---|
| Price | $22.99 | $19.99 |
| Ranked | #21 of 62 in Small Size Portable Bluetooth Speakers | #39 of 62 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 | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Bluetooth Version | 5.4 | 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 |
| Strap | Yes (built-in carabiner) | Yes (carabiner hook, suction cup) |
| MicroSD Playback | - | Yes |
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