Short answer: it’s essentially a toss-up. The Soundlink Flex ranks #36 of 151 medium speakers at $79.99, and the Charge Essential 2 ranks #37 at $130, just $50.01 less. A one-spot ranking gap means the real decision comes down to what each one does differently.
The Soundlink Flex is built to survive rough handling and floats, but leans warm. It’s IP67 rated and rugged enough to survive drops from several feet, backed by around 12 hours of battery at moderate volume. Its own notes describe a warm sound with overly boosted bass that can drown out midrange detail, a tradeoff some listeners will like and others won’t.
The Charge Essential 2 is a stripped-down Charge that trades features for battery life and a power bank. It carries a claimed 20-hour battery life, well ahead of the Flex’s 12 hours, plus a USB-A power bank output that the Flex lacks. Its own notes call it a pared-back version of the Charge line: no app EQ, no party mode, and no stereo pairing, with a little less bass authority than the full Charge 5 and an IPX7 rating that doesn’t promise dust protection. Its own guidance is to buy it for a good sale price, not for extra features.
Both are mono speakers with the same basic ceiling: neither offers stereo output, both charge over USB-C, and both land at a similar overall rank despite different strengths.
Buy the Bose Soundlink Flex if drop resistance, floating in water, and Bose’s Party mode linking matter more to you than raw battery life.
Buy the JBL Charge Essential 2 if a longer-lasting battery and the built-in power bank matter more than app control or stereo pairing options.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Bose Soundlink Flex | JBL Charge Essential 2 | |
|---|---|---|
| Price | $79.99 | $130 |
| Ranked | #36 of 151 in Medium Size Portable Bluetooth Speakers | #37 of 151 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Bass Extension (-10dB) | 56Hz | ~55Hz |
| Battery Life | 12 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| EQ | No | No |
| IP Rating | IP67 | IPX7 |
| Bluetooth Latency | 33ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Bose Party mode) | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Weight | 1.3 lbs (589 g) | 2.1 lbs (930 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.1 |
| Dimensions | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) | 8.8” x 3.8” x 3.7” (223 x 96.5 x 94 mm) |
| Drivers | 1x 60mm full-range driver + 2x passive radiators | 53mm x 93mm woofer, 20mm tweeter |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Aux Input | No | No |
| Strap | Yes (built-in loop) | No |
| Power Bank | - | Yes (USB-A) |
| Frequency Response | - | 60Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | - | 40W |
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Prices on this page were last checked October 2, 2026 at 10:18 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
Bose Soundlink Flex: $79.99 Amazon eBay
Newer model: the Bose Soundlink Flex 2nd gen, ranked higher, rated 3.8/5.
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 →
| 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 →
- Joy & Oluv’Sone: Bose Soundlink Flex 2nd gen vs Flex
- 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 →
- Alan Ross Reviews: Bose Soundlink Flex vs Minirig MK3 and Marshall Emberton - best bluetooth speaker?
- 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!
- Head-to-Head Comparisons
- Bose Soundlink Flex vs Bose Soundlink Flex 2nd gen
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JBL Charge Essential 2: $130 eBay
Newer model: the JBL Charge Essential 3 SE, ranked lower, rated 3.7/5.
Pros: A tough, compact 930g speaker with IPX7 water resistance, USB-C charging, a USB-A power-bank output and a claimed 20-hour battery life. It delivers much of the Charge 5’s familiar punch and volume in a simpler package, with bass that reaches roughly 55Hz for this size. Measured bass extension of ~55Hz (-10dB).
Cons: It is a pared-back Charge: no app EQ, no PartyBoost/party mode and no stereo-pair option. It plays mono, has a little less bass authority than the Charge 5, and its IPX7 rating does not promise dust protection. Choose it for a good sale price, not for extra features.
Full JBL Charge Essential 2 review and specifications →
| Amplifier Power | 40W |
|---|---|
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | ~55Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.1 |
| Digital Aux Input | No |
| Dimensions | 8.8” x 3.8” x 3.7” (223 x 96.5 x 94 mm) |
| Drivers | 53mm x 93mm woofer, 20mm tweeter |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | No |
| Strap | No |
| TWS | No |
| Weight | 2.1 lbs (930 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- JBL Charge Essential 2 vs Huawei Sound Joy
- JBL Charge Essential 2 vs Bose Soundlink Flex 2nd gen
- JBL Charge Essential 2 vs Tribit Xsound Plus 2
- JBL Charge Essential 2 vs JBL Charge Essential 3 SE
- JBL Charge Essential 2 vs Teufel Rockster XS
- JBL Charge Essential 2 vs Earfun Uboom Slim
- JBL Charge Essential 2 vs Soundcore Motion 100
- JBL Charge Essential 2 vs Tribit Stormbox Pro
- See all 135 comparisons