Short answer: the Bose Soundlink Flex 2nd gen on measured sound quality, the TOZO PA1 on price. The Bose Soundlink Flex 2nd gen ranks #37 of 179 medium speakers, rated 3.8/5, at $159. The TOZO PA1 ranks #60, rated 3.5/5, at $39.99, $119.01 cheaper.
What the Bose Soundlink Flex 2nd gen does well: A small, rugged waterproof speaker with clear, well balanced mids, app EQ, aptX Adaptive and stereo pairing with a second unit. It supports aptX Adaptive Bluetooth, which the TOZO PA1 lacks. The catch: One Flex remains mono and cannot deliver genuine low-bass rumble; RTINGS also found the elevated treble can turn hi-hats and other high-frequency detail piercing.
The TOZO PA1 is the longer-running choice. A budget water resistant speaker with very long battery life, app EQ and pairing with a second unit. It is rated for 25 hours of battery against 12 for the Bose Soundlink Flex 2nd gen. The tradeoff: Bass is limited, fading by about 52Hz.
Buy the Bose Soundlink Flex 2nd gen when sound quality outweighs the price for you, and the TOZO PA1 when the price outweighs sound quality instead.
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
| Bose Soundlink Flex 2nd gen | TOZO PA1 | |
|---|---|---|
| Price | $159.00 | $39.99 |
| Ranked | #37 of 179 in Medium Size Portable Bluetooth Speakers | #60 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| EQ | Yes (3 band) | Yes |
| IP Rating | IP67 | IPX6 |
| Party Mode | Yes (Bose Party mode) | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.3 lbs (586 g) | 1.3 lbs (581 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) | 8.3” x 3.6” x 2.4” (210 x 91 x 61 mm) |
| Aux Input | No | No |
| Drivers | 60mm full-range driver with passive radiators | 67mm fullrange |
| Bluetooth Codecs | SBC, AAC, aptX Adaptive | SBC, AAC |
| Digital Aux Input | No | No |
| Strap | Yes (built-in loop) | Yes (lanyard) |
| Bass Extension (-10dB) | - | 52Hz |
| Bluetooth Latency | - | 220ms |
| Maximum SPL | - | 98dB (measured by Alan Ross Reviews) |
| Frequency Response | - | 55Hz - 18kHz (Manufacturer specified) |
| Amplifier Power | - | 20W |
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