Short answer: the Harman Kardon Luna 2 on measured sound quality, the Bogasing M5 on price. The Harman Kardon Luna 2 ranks #25 of 177 medium speakers, rated 4.1/5, at $199.95. The Bogasing M5 ranks #61, rated 3.5/5, at $52.99, $146.96 cheaper.
The Harman Kardon Luna 2 is the better-sounding option. A stylish waterproof speaker with clear, spacious mids, tight bass that stays clean at volume, and stereo pairing with a second unit. The catch: Treble can sound bright and edgy, and it loses more output off-axis than some rivals.
The Bogasing M5 is the longer-running pick. 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 2. It keeps a wired aux input, which the Harman Kardon Luna 2 lacks. The catch: Front/rear driver configuration.
Buy the Harman Kardon Luna 2 if sound quality is the priority over the price, or the Bogasing M5 if the price is the priority over sound quality.
Want more options? Browse the full Portable Bluetooth rankings.
A stylish waterproof speaker with clear, spacious mids, tight bass that stays clean at volume, 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 2 | Bogasing M5 | |
|---|---|---|
| Price | $199.95 | $52.99 |
| Ranked | #25 of 177 in Medium Size Portable Bluetooth Speakers | #61 of 177 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| 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) | 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 | No | Yes |
| Weight | 1.6 lbs (735 g) | 1.7 lbs (757 g) |
| Bluetooth Version | 5.4 | 5.3 |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) | 6.3” x 3” x 2.8” (160 x 76 x 71 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 30W system |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 40W (25W woofer + 15W tweeter) | 40W |
| Digital Aux Input | No | No |
| Strap | No | - |
| Bass Extension (-10dB) | - | 61Hz |
| Maximum SPL | - | 96dB (measured by Alan Ross Reviews) |
| Power Bank | - | Yes (USB-A) |
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