Short answer: the Earfun Uboom Slim for value and waterproofing, the Soundcore Motion 300 for bass and stereo modes. The Uboom Slim has excellent pricing, a strong IPX7 build, good 16-hour battery and a speakerphone, but its bass is not as deep and it is warm tuned with peaks in the mids and lower treble. The Motion 300 gives pretty deep bass for its size plus stereo or omnidirectional use, though it needs its EQ for rolled-off treble.
Buy the Soundcore Motion 300. It is rated higher for sound quality, and the $0.99 saving on the Earfun Uboom Slim is not enough to make up the difference.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Soundcore Motion 300 | Earfun Uboom Slim | |
|---|---|---|
| Price | $79.99 | $79 |
| Ranked | #2 of 145 in Medium Size Portable Bluetooth Speakers | #41 of 145 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 50Hz | ~63Hz |
| Battery Life | 13 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, LDAC, SBC | SBC |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (9 band with adjustable frequency) | No |
| IP Rating | IPX7 | IPX7 |
| Bluetooth Latency | 216ms ldac, 200ms aac, 116ms sbc | - |
| Maximum SPL | 101dB (measured by Alan Ross Reviews) | - |
| Power Bank | No | - |
| Stereo | Yes | Yes |
| Omnidirectional | Pointing up | No |
| TWS | Yes | Yes |
| Weight | 1.7 lbs (772 g) | 1.2 lbs (560 g) |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 7.9” x 3.6” x 2” (200 x 92 x 50 mm) | 2.6”H x 7.1”W x 2.6”D (65 x 180 x 65 mm) |
| Drivers | 2x 50.8mm (2”) full-range drivers + 2x passive radiators | 45mm speaker drivers |
| Frequency Response | 65Hz - 40kHz (Manufacturer specified) | - |
| Power Input | USB-C | USB-C |
| Amplifier Power | 30W | 20W |
| Party Mode | Yes (PartyCast up to 100 speakers) | - |
| Digital Aux Input | No | No |
Related Speaker Comparisons
How Soundcore Motion 300 compares with other leading options:
- Earfun Uboom L vs Soundcore Motion 300
- Soundcore Motion 300 vs Soundcore Motion+
- Soundcore Boost “upgraded” 2021 vs Soundcore Motion 300
- Soundcore Motion 300 vs Denon Envaya DSB-250BT
- Minirig 4 vs Soundcore Motion 300
Prices on this page were last checked September 26, 2026 at 11:14 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
Soundcore Motion 300: $79.99 Amazon eBay
Older model: the Soundcore Motion+ (ranked lower, rated 4.4/5).
Pros: Pretty deep bass for the small size. Pocket size in a big pocket. Can be used in stereo facing you, or omnidirectional lying down. Ability to have a custom EQ for each orientation, standing, lying flat, hanging. Try the Uboom L EQs from Oluv for a more neutral sound. Measured bass extension of 50Hz (-10dB).
Cons: Without the above EQ or turning the top 2 treble EQ bars to max, this speaker is very rolled off in the treble and will rank around #50 in the rankings. Bassup mode is worse than Signature. Not quite as detailed or neutral as higher ranked speakers. Slight bass distortion when turned up.
Full Soundcore Motion 300 review and specifications →
| Amplifier Power | 30W |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz |
| Battery Life | 13 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, LDAC, SBC |
| Bluetooth Latency | 216ms ldac, 200ms aac, 116ms sbc |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.9” x 3.6” x 2” (200 x 92 x 50 mm) |
| Drivers | 2x 50.8mm (2”) full-range drivers + 2x passive radiators |
| EQ | Yes (9 band with adjustable frequency) |
| Frequency Response | 65Hz - 40kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Maximum SPL | 101dB (measured by Alan Ross Reviews) |
| Omnidirectional | Pointing up |
| Party Mode | Yes (PartyCast up to 100 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.7 lbs (772 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Bose Soundlink Flex 2nd gen & Soundcore Motion 300 sound test More from Oluv’Sone →
- Alan Ross Reviews: Travel Speakers! Soundcore Motion 300 or Bose Flex or Tribit Stormbow Flow More from alanrossreviews →
- Alan Ross Reviews: Soundcore Motion 300 or JBL Flip 6 or Soundcore Boost v2? we all have issues!
- Jay’s Straight Up Reviews & More: On A Ledge 🪟 Soundcore Motion 300 vs Tozo PA1 ⚒ Battle of the Budget Handheld Bluetooth Speakers More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: Tribit Stormbox Flow vs Soundcore Motion 300 (LDAC) 😵 Budget Bose Soundlink Flex "Inspired" Speakers
- Oluv Patreon: Soundcore Motion 300 = Bose Soundlink Flex = Earfun UBoom L?
- Oluv Patreon: SoundCore Motion 300 vs VIFA Helsinki
- Oluv Patreon: (Anker) Soundcore Motion 300 - first impressions
- New Stuff TV 2: Sony ULT Field 1 vs JBL Flip 6, JBL Charge 5 & Soundcore Motion 300 More from NewStuffTV1 →
- Storytripper HD: Klipsch Nashville vs Harman Kardon Luna vs Soundcore Motion 300 More from storytripperhd →
- Head-to-Head Comparisons
- Soundcore Motion 300 vs Earfun Uboom L
- Soundcore Motion 300 vs Soundcore Motion+
- Soundcore Motion 300 vs Soundcore Boost “upgraded” 2021
- Soundcore Motion 300 vs Denon Envaya DSB-250BT
- Soundcore Motion 300 vs Minirig 4
- Soundcore Motion 300 vs B&O Beosound A1
- Soundcore Motion 300 vs B&O Beosound A1 2nd gen
- Soundcore Motion 300 vs JBL Charge 6
- See all 103 comparisons
Earfun Uboom Slim: $79 eBay
Pros: Excellent pricing, strong waterproof build (IPX7), good battery life (16 hours), smooth sound with volume compensation, speakerphone capability. Measured bass extension of ~63Hz (-10dB).
Cons: Not as deep bass as others. Warm tuned, peaks in the mids and lower treble, rolled off upper treble
Full Earfun Uboom Slim review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~63Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 2.6”H x 7.1”W x 2.6”D (65 x 180 x 65 mm) |
| Drivers | 45mm speaker drivers |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.2 lbs (560 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Earfun Uboom Slim vs Xiaomi Sound Outdoor
- Earfun Uboom Slim vs Bose Soundlink Flex
- Earfun Uboom Slim vs Bose Soundlink Flex 2nd gen
- Earfun Uboom Slim vs Bose Soundlink Revolve+ II
- Earfun Uboom Slim vs Tribit Xsound Plus 2
- Earfun Uboom Slim vs Soundcore Boom 3i
- Earfun Uboom Slim vs Soundcore 3/Soundcore Select 2
- Earfun Uboom Slim vs Sony ULT Field 3
- See all 16 comparisons