Short answer: the Bogasing G4. It ranks #23 of 134 medium speakers at $39.59; the Bose Soundlink Flex 2nd gen ranks #33 and costs $129, so there is not much of a tradeoff to weigh.
What the Bogasing G4 gets right: Clear sound with punchy bass, exceptional 24-hour battery life, IPX7 waterproof, multiple sound modes for different music styles. The catch: Some boosted treble that’s wavy up top.
On the Bose Soundlink Flex 2nd gen side: Pretty much identical sounding to the 1st gen. The tradeoff: Not stereo.
Buy the Bogasing G4 if the ranking matters more than the price. Buy the Bose Soundlink Flex 2nd gen if the price matters more than the ranking.
Specifications Side By Side
| Bogasing G4 | Bose Soundlink Flex 2nd gen | |
|---|---|---|
| Price | $39.59 | $129.00 |
| Ranked | #23 of 134 in Medium Size Portable Bluetooth Speakers | #33 of 134 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | Yes | No |
| Aux Latency | 16ms | - |
| Bass Extension (-10dB) | 56Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| EQ | No | Yes (3 band) |
| IP Rating | IPX7 | IP67 |
| Bluetooth Latency | 90ms | - |
| Max Volume | 100dB | - |
| MicroSD Playback | Yes | - |
| Party Mode | No | Yes (Bose Party mode) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| TWS | Yes | Yes |
| Weight | 1.8 lbs / 0.83 kg | 1.3 lbs / 586 g |
| Bluetooth Codecs | LE Audio with LC3 | SBC, AAC, aptX Adaptive |
| Output Power | 50W | - |
| Drivers | Two drivers and passive radiators | 60mm full-range driver with passive radiators |
| Bluetooth Version | 5.3 | 5.3 |
| Built in Microphone | - | Yes |
| Dimensions | - | 7.9" x 3.6" x 2.1" (201 x 90 x 52 mm) |
The Two Speakers In Full
Bogasing G4: $39.59 Amazon
Pros: Clear sound with punchy bass, exceptional 24-hour battery life, IPX7 waterproof, multiple sound modes for different music styles, dual pairing support
Cons: Some boosted treble that’s wavy up top. Slightly dipped mids. Super Bass and vocal mode seem identical.
| App | No |
|---|---|
| Aux Input | Yes |
| Aux Latency | 16ms |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | LE Audio with LC3 |
| Bluetooth Latency | 90ms |
| Bluetooth Version | 5.3 |
| Drivers | Two drivers and passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| Max Volume | 100dB |
| MicroSD Playback | Yes |
| Output Power | 50W |
| Party Mode | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.8 lbs / 0.83 kg |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Links
Bose Soundlink Flex 2nd gen: $129.00 Amazon
Pros: Pretty much identical sounding to the 1st gen
Cons: Not stereo. Warm sounding with overly boosted bass which drowns out midrange detail. Self drains the battery about 10% a week.
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, aptX Adaptive |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Dimensions | 7.9" x 3.6" x 2.1" (201 x 90 x 52 mm) |
| Drivers | 60mm full-range driver with passive radiators |
| EQ | Yes (3 band) |
| IP Rating | IP67 |
| Party Mode | Yes (Bose Party mode) |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 1.3 lbs / 586 g |
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Bose Soundlink Flex 2nd gen vs Flex
- Oluv Patreon: Bose Soundlink Flex 2nd gen - sound demo
- Tô Thái Trí Hùng: Unbox & Sound Test - Bose Soundlink Flex 2
- Joy & Oluv’Sone: Bose Soundlink Flex 2nd gen & Soundcore Motion 300 sound test
- Alan Ross: Hall of Fame classic vs latest Bose tech!
- CEONTHEMAKING: Bose Soundlink Flex 2nd Gen VS Marshall Emberton III - What’s NEW??
- Alan Ross - The Anti Shill!: Small speaker, mighty sound, The Flex gen 2 shatters physics!
- Head-to-Head Comparisons
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- See all 14 comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.