Short answer: the Harman Kardon Luna 2. It ranks #25 of 182 medium speakers by sound quality, rated 4.1/5, at $199.95; the Bose Portable Smart Speaker ranks #75, rated 3.4/5, and costs $399, so there is little reason to consider the other one.
The Harman Kardon Luna 2 is the better-sounding, lighter pick. A stylish waterproof speaker with clear, spacious mids, tight bass that stays clean at volume, and stereo pairing with a second unit. At 1.6 lbs (735 g) it weighs noticeably less than the Bose Portable Smart Speaker at 2.3 lbs (1.06 kg). It is rated IP67 against IPX4 for the Bose Portable Smart Speaker. The catch: Treble can sound bright and edgy, and it loses more output off-axis than some rivals.
What the Bose Portable Smart Speaker does well: A smart speaker with Alexa and Google Assistant built in that streams over Wi-Fi at home and Bluetooth on the go. It supports AAC Bluetooth, which the Harman Kardon Luna 2 lacks. The catch: RTINGS found the out of the box tuning boomy and says it doesn’t get very loud; the app’s bass and treble sliders help, and SoundGuys recommended cutting bass by 10 to 20 steps to balance it.
Buy the Harman Kardon Luna 2. It is rated higher for sound quality than the Bose Portable Smart Speaker and costs less, so only choose the other one for a particular feature it does better.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 14, 2026 at 6:17 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
| Harman Kardon Luna 2 | Bose Portable Smart Speaker | |
|---|---|---|
| Price | $199.95 | $399.00 |
| Ranked | #25 of 182 in Medium Size Portable Bluetooth Speakers | #75 of 182 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes (Bose Music) |
| Aux Input | No | No |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC |
| EQ | Yes (4 presets + custom) | Yes (Bass/Treble) |
| IP Rating | IP67 | IPX4 |
| MicroSD Playback | No | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | Pointing up |
| TWS | Yes | No |
| USB Playback | No | - |
| Weight | 1.6 lbs (735 g) | 2.3 lbs (1.06 kg) |
| Bluetooth Version | 5.4 | 4.2 |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) | 7.6” x 4.7” x 4.1” (192 x 119 x 104 mm) (H x W x D) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 1x high-excursion driver with 360-degree deflector + 3x passive radiators |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | - |
| Amplifier Power | 40W (25W woofer + 15W tweeter) | - |
| Digital Aux Input | No | No |
| Strap | No | No |
| Built-in Microphone | - | Yes (far-field mic array, mic mute button) |
| Wi-Fi | - | Yes |
| Voice Assistants | - | Amazon Alexa & Google Assistant |
| Party Mode | - | Yes (Bose Music multi-room, SimpleSync, AirPlay 2) |
| Power Bank | - | No |
| Streaming Services | - | AirPlay 2, Chromecast built-in, Spotify Connect, Amazon Music, Pandora, SiriusXM, TuneIn |
Where the Ratings Come From
- Harman Kardon Luna 2: reviews by Joy & Oluv’Sone, Mateusz Cholewa and Storytripper HD.
- Bose Portable Smart Speaker: reviews by SoundGuys, RTINGS and Tom’s Guide.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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