Short answer: the Harman Kardon Luna on measured sound quality, the Bogasing M5 on price. The Harman Kardon Luna ranks #26 of 177 medium speakers, rated 4.0/5, at $290.99. The Bogasing M5 ranks #61, rated 3.5/5, at $52.99, $238 cheaper.
The Harman Kardon Luna is the better-sounding option. A fully waterproof speaker with fairly balanced, bass rich sound, a separate tweeter, and stereo pairing with a second unit. The catch: Boosted bass, and less detailed than higher-ranked speakers.
The Bogasing M5 is the longer-running, lighter choice. A compact, backpack friendly speaker with very long battery life and USB-C charging at a budget price. It is rated for 30 hours of battery against 12 for the Harman Kardon Luna. At 1.7 lbs (757 g) it weighs noticeably less than the Harman Kardon Luna at 2.5 lbs (1.13 kg). It keeps a wired aux input, which the Harman Kardon Luna lacks. The tradeoff: Front/rear driver configuration.
Buy the Harman Kardon Luna if sound quality is the priority over the price, or the Bogasing M5 if the price is the priority over sound quality.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A fully waterproof speaker with fairly balanced, bass rich sound, a separate tweeter, and stereo pairing with a second unit.
A compact, backpack friendly speaker with very long battery life and USB-C charging at a budget price.
Prices on this page were last checked October 31, 2026 at 7:11 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 | Bogasing M5 | |
|---|---|---|
| Price | $290.99 | $52.99 |
| Ranked | #26 of 177 in Medium Size Portable Bluetooth Speakers | #61 of 177 in Medium Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 57Hz | 61Hz |
| Battery Life | 12 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| EQ | No | Yes |
| IP Rating | IP67 | IPX7 |
| MicroSD Playback | No | Yes |
| Power Input | USB-C | USB-C |
| Stereo | No | No (front/rear drivers) |
| Omnidirectional | No | Yes |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 2.5 lbs (1.13 kg) | 1.7 lbs (757 g) |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) | 6.3” x 3” x 2.8” (160 x 76 x 71 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 30W system |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 40W | 40W |
| Digital Aux Input | No | No |
| Maximum SPL | - | 96dB (measured by Alan Ross Reviews) |
| Power Bank | - | Yes (USB-A) |
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