Short answer: the Bose Soundlink Flex. It ranks #38 of 166 medium speakers by sound quality, rated 3.8/5, at $79.99; the Turtlebox Ranger ranks #65, rated 3.5/5, and costs $250, so there is not much of a tradeoff to weigh.
The SoundLink Flex is the better value. Its 60mm driver and two passive radiators reach about 56Hz before falling 10dB, Alan Ross measured 96dB, and it is rated IP67, survives drops and floats. Its warm tuning boosts the bass enough to drown out some midrange detail.
The Turtlebox Ranger is the toughest small speaker here. It has the smoothest response of any Turtlebox, is rated IP67, and its magnets stick it to metal surfaces. Its bass is thuddy and not very deep, and at 2.4 lbs (1.09 kg) it is heavy for its size. It joins other Turtleboxes in Party Mode.
Buy the Bose Soundlink Flex. It is rated higher for sound quality than the Turtlebox Ranger and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Turtlebox Ranger | Bose Soundlink Flex | |
|---|---|---|
| Price | $250.00 | $79.99 |
| Ranked | #65 of 166 in Medium Size Portable Bluetooth Speakers | #38 of 166 in Medium Size Portable Bluetooth Speakers |
| Battery Life | 12+ hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 | 4.2 |
| Dimensions | 9.5” x 3.1” x 3.1” (241 x 80 x 80 mm) | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) |
| Drivers | 2” (51mm) woofers | 1x 60mm full-range driver + 2x passive radiators |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Turtlebox Party Mode) | Yes (Bose Party mode) |
| Power Bank | Yes (USB-C) | - |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 2.4 lbs (1089 g) | 1.3 lbs (589 g) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| App | No | Yes |
| EQ | No | No |
| Power Input | USB-C | USB-C |
| Aux Input | No | No |
| Strap | No | Yes (built-in loop) |
| Bass Extension (-10dB) | - | 56Hz |
| Built-in Microphone | - | Yes |
| Bluetooth Latency | - | 33ms |
| Maximum SPL | - | 96dB (measured by Alan Ross Reviews) |
Related Speaker Comparisons
How Bose Soundlink Flex compares with other leading options:
- Bose Soundlink Flex vs EarFun Uboom L
- Soundcore Motion 300 vs Bose Soundlink Flex
- Soundcore Motion+ vs Bose Soundlink Flex
- Soundcore Boost “upgraded” 2021 vs Bose Soundlink Flex
- Bose Soundlink Flex vs Minirig 4
Prices on this page were last checked October 9, 2026 at 8:01 AM 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
Turtlebox Ranger: $250.00 Amazon eBay
Same family: the Turtlebox Cub (smaller model, rated 3/5), the Turtlebox Gen 3 (larger model, rated 2.1/5) and the Turtlebox Grande (larger model, rated 2.6/5). See every Turtlebox generation.
Pros: Smoother frequency response than the other Turtlebox speakers. Has magnets for attaching it to things. Appears to be quite tough
Cons: Bass sounds kind of thuddy and isn’t as deep as higher ranked speakers. Overpriced. Heavy for the size, likely due to the toughness
Full Turtlebox Ranger review and specifications →
| Released | Feb 2025 (1 year ago) |
|---|---|
| App | No |
| Aux Input | No |
| Battery Life | 12+ hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.4 |
| Digital Aux Input | No |
| Dimensions | 9.5” x 3.1” x 3.1” (241 x 80 x 80 mm) |
| Drivers | 2” (51mm) woofers |
| EQ | No |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Turtlebox Party Mode) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | No |
| Strap | No |
| TWS | Yes |
| Weight | 2.4 lbs (1089 g) |
- Links
- Reviews, Comparisons and Sound Samples
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Bose Soundlink Flex: $79.99 Amazon eBay
Newer model: the Bose Soundlink Flex 2nd gen, ranked higher, rated 3.8/5, released Sep 2024. It adds adjustable EQ, AAC and aptX Adaptive. See every Bose SoundLink Flex, Micro, Max and Plus generation.
Pros: IP67 rated; rugged enough to survive drops from several feet and floats. Around 12 hours of battery at moderate volume. Measured bass extension of 56Hz (-10dB).
Cons: Not stereo. Warm sounding with overly boosted bass which drowns out midrange detail
Full Bose Soundlink Flex review and specifications →
| Released | Oct 2021 (5 years ago) |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 33ms |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) |
| Drivers | 1x 60mm full-range driver + 2x passive radiators |
| EQ | No |
| IP Rating | IP67 |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Bose Party mode) |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 1.3 lbs (589 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Bose Soundlink Flex 2nd gen vs Flex More from Oluv’Sone →
- Alan Ross Reviews: Bose Soundlink Flex Review! vs JBL Flip 6 and JBL Charge 5. Travel heaven?? 🤞 More from alanrossreviews →
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- Alan Ross Reviews: Beats Pill vs Harman Luna vs Bose Flex vs Soundcore Motion Plus
- Alan Ross Reviews: Tribit Xsound Mega vs the world! (JBL Charge 5, Bose Flex, Sony XB33, LG PL7) 👍
- Alan Ross Reviews: Bose Soundlink Flex vs Soundcore Boost vs Bogasing M4 - cheap or Bose?
- Alan Ross Reviews: Tribit Stormbox Flow has deeper bass than the Bose Flex but………..
- Jay’s Straight Up Reviews & More: Tribit Stormbox Flow vs Soundcore Motion 300 (LDAC) 😵 Budget Bose Soundlink Flex "Inspired" Speakers More from JaysStraightUpReviews →
- Oluv Patreon: Soundcore Motion 300 = Bose Soundlink Flex = Earfun UBoom L?
- Alan Ross Reviews: Bose Soundlink Flex or JBL Flip 6 (eq adjusted) or Denon Envaya - best speaker for travel!
- Alan Ross Reviews: Bose Soundlink Flex or Beosound A1 (1st gen) - ultimate compact speaker 😇
- Alan Ross Reviews: Bose Soundlink Flex or JBL Flip 6 (eq adjusted) or Denon Envaya - best speaker for travel!
- Jay’s Straight Up Reviews & More: Tribit Stormbox Flow vs Soundcore Motion 300 (LDAC) 😵 Budget Bose Soundlink Flex "Inspired" Speakers
- Patricio Benadon: Bose SoundLink Flex vs. Mini 2 SE. Music audio quality sound test. Listen 4 different genres!
- Patricio Benadon: Bose SoundLink Flex vs. Mini 2 SE. Music audio quality sound test. Listen 4 different genres!
- Danny Pops: BEST Bose Speaker?? Bose Soundlink Flex vs micro, Color II, and revolve + More from DannyPops →
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- Joy & Oluv’Sone: JBL, Bose, B&O, Sonos, Earfun, SoundCore… which portable speaker sounds best?
- Alan Ross - The Anti Shill!: Small speaker, mighty sound, The Flex gen 2 shatters physics!
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