Short answer: the Harman Kardon Luna 2. It ranks #23 of 150 medium speakers by sound quality, rated 4.1/5, at $199.95. The Altec Lansing Lifejacket 2 ranks #149, rated 2.0/5, at $69.99, $129.96 cheaper, a saving that is not big enough to make up the sound-quality gap.
The case for the Harman Kardon Luna 2: Articulate, spacious midrange with precise imaging and instrument separation. The tradeoff: Treble can sound bright and edgy, and it loses more output off-axis than some rivals.
The case for the Altec Lansing Lifejacket 2: Tank-like build quality: reviewers have frozen it, dropped it, and buried it in sand with no issues. The tradeoff: Barely any bass, “pathetic sounding” said Jay’s Reviews of the line generally.
Buy the Harman Kardon Luna 2. It is rated higher for sound quality, and the $129.96 you would save on the Altec Lansing Lifejacket 2 does not close the gap.
If battery life is a priority, the Altec Lansing Lifejacket 2 is rated for 30 hours versus 12 hours for the Harman Kardon Luna 2.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Harman Kardon Luna 2 | Altec Lansing Lifejacket 2 | |
|---|---|---|
| Price | $199.95 | $69.99 |
| Ranked | #23 of 150 in Medium Size Portable Bluetooth Speakers | #149 of 150 in Medium Size Portable Bluetooth Speakers |
| App | Yes | - |
| Aux Input | No | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| EQ | Yes (4 presets + custom) | - |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | No | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | No | - |
| Weight | 1.6 lbs (735 g) | 2.7 lbs (1.22 kg) |
| Bluetooth Version | 5.4 | - |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) | 8.6” x 4.2” x 4.6” (218 x 107 x 117 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 4.5” (114mm) woofer |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | - |
| Amplifier Power | 40W (25W woofer + 15W tweeter) | 10W |
| Digital Aux Input | No | No |
| Strap | No | Yes (mounting clip) |
| Built-in Microphone | - | Yes |
| Power Bank | - | Yes |
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- Harman Kardon Luna 2 vs B&O Beosound A1 2nd gen
- Harman Kardon Luna 2 vs JBL Charge 6
Prices on this page were last checked September 30, 2026 at 2:57 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
Harman Kardon Luna 2: $199.95 Amazon B&H Photo Video eBay
Older model: the Harman Kardon Luna (ranked lower, rated 4/5).
Pros: Articulate, spacious midrange with precise imaging and instrument separation. Tight, well-controlled bass from the 62mm x 82mm woofer and passive radiator despite the compact body, and it stays cleaner at volume than pricier rivals like the Sonos Play. IP67 rated, and two units pair via AirTouch for true stereo sound.
Cons: Treble can sound bright and edgy, and it loses more output off-axis than some rivals. Some listeners hear mid-range rattling on certain tracks, similar to sibling JBL models. 12-hour battery life trails category leaders like the JBL Charge 6, which doubles it. Single unit is not stereo (1.1 driver layout).
Full Harman Kardon Luna 2 review and specifications →
| Amplifier Power | 40W (25W woofer + 15W tweeter) |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Digital Aux Input | No |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter |
| EQ | Yes (4 presets + custom) |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) |
| IP Rating | IP67 |
| MicroSD Playback | No |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 1.6 lbs (735 g) |
- Links
- Reviews, Comparisons and Sound Samples
- What Hi-Fi?: Harman Kardon Luna 2 review
- Joy & Oluv’Sone: Sonos Play & Harman Kardon Luna 2 - listening test More from Oluv’Sone →
- Mateusz Cholewa: Harman Kardon Luna 2 UNBOXING vs HK Luna Short Test More from Mateusz Cholewa →
- Storytripper HD: Harman Kardon Luna vs Luna 2 More from storytripperhd →
- Head-to-Head Comparisons
- Harman Kardon Luna 2 vs Harman Kardon Luna
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- Harman Kardon Luna 2 vs JBL Charge 5 Wifi
- Harman Kardon Luna 2 vs JBL Charge 5
- Harman Kardon Luna 2 vs B&O Beosound A1 3rd gen
- Harman Kardon Luna 2 vs Soundcore Boom 3i
- Harman Kardon Luna 2 vs Miatone Boompro
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Altec Lansing Lifejacket 2: $69.99 Amazon eBay
Newer model: the Altec Lansing Lifejacket 3, ranked higher, rated 2/5.
Pros: Tank-like build quality: reviewers have frozen it, dropped it, and buried it in sand with no issues. IP67 rated; doubles as a power bank. Universal mounting clip for a bike, kayak, or backpack. Built-in speakerphone with voice-confirmed caller ID.
Cons: Barely any bass, “pathetic sounding” said Jay’s Reviews of the line generally. Gets distorted with a lot of bass. No true wireless stereo pairing between two units, unlike the Lifejacket 3. Only available used now.
Full Altec Lansing Lifejacket 2 review and specifications →
| Amplifier Power | 10W |
|---|---|
| Aux Input | Yes |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.6” x 4.2” x 4.6” (218 x 107 x 117 mm) |
| Drivers | 4.5” (114mm) woofer |
| IP Rating | IP67 |
| Omnidirectional | No |
| Power Bank | Yes |
| Power Input | Micro USB |
| Stereo | No |
| Strap | Yes (mounting clip) |
| TWS | No |
| Weight | 2.7 lbs (1.22 kg) |
- Reviews, Comparisons and Sound Samples
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