If you want a compact everyday pair with a clear six-hour earbud-plus-case battery breakdown, choose Motorola Sound Buds 135; if you need a more secure ear-hook fit and longer stated total playback, choose JKNKCO MS219. For swimming, choose neither: both are rated IPX5, which is intended for sweat and light water exposure, not swimming or submersion.
If you want compact everyday earbuds with three ear-tip sizes, choose Motorola Sound Buds 135; if you need an ear-hook design and longer stated total playback, choose JKNKCO MS219. For swimming, choose neither: both are rated IPX5, a rating described for sweat and light rain rather than submersion.
The JKNKCO is built around a more secure sports fit, while Motorola has a straightforward in-ear design and a compact charging case. Neither product’s listed features make it a suitable choice for swimming.
Motorola Sound Buds 135 vs JKNKCO MS219 at a Glance
• Motorola Sound Buds 135: Compact case, three sizes of rubber ear tips, touch controls, and up to 18 hours of total playtime. Trade-off: its listed battery figures are six hours from the earbuds and 12 additional hours from the case.
• JKNKCO MS219: Ear hooks, IPX5 water resistance, Bluetooth 6.0, and up to 28 hours of total playback. Trade-off: the stated details focus on workouts and light rain, not swimming.
• For calls: Motorola has a microphone in each earbud and supports using one earbud as a mono headset. JKNKCO lists a built-in microphone and noise-reduction technology.
• For movement: The JKNKCO’s ear-hook and in-ear combination is designed to help keep the earbuds secure during exercise; Motorola’s fit relies on its in-ear shape and choice of tip sizes.
• Pick Motorola for a compact everyday pair with a clearly described case-and-earbud battery breakdown.
• Pick JKNKCO if you want ear hooks and prioritize its longer stated total playback.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Motorola Sound Buds 135 are true wireless in-ear earbuds with Bluetooth 5, touch controls, and a compact charging case. The package description includes three sizes of rubber ear tips, which gives you options for finding a fit that feels comfortable and stays in place. Their stated playback is six hours from the earbuds, with 12 more hours available from the case.
These make sense for someone who wants a simple pair for commuting, school, or work. Each earbud has a built-in microphone, and the pair can also be used as a mono headset. Touch controls cover calls, volume, and track skipping, while voice-command support adds a hands-free option. The listed audio range is 20 Hz to 20,000 Hz, and the earbuds use dynamic drivers.
I would skip them if your main need is a hook-secured fit for vigorous exercise, since the listed design is an in-ear rounded tip rather than an ear-hook style. Their IPX5 rating is described for sweat, moisture, and the elements; it does not make them swimming earbuds. They are a better match for everyday listening and light exposure to moisture than pool use.
The JKNKCO MS219 combines an in-ear bud with an ear hook that wraps around the outer ear. That gives it a sport-focused design intended to help the earbuds stay put during activities such as running and gym training. The earbuds use Bluetooth 6.0, have a stated connection range of 10 meters, and are listed with 10 mm dynamic drivers.
Battery life is a strong part of the spec sheet: up to seven hours of continuous playback, with the charging case extending total playback to 28 hours. Touch controls handle music and calls, and the listed features include waking a voice assistant. For calls, JKNKCO describes a built-in microphone with noise-reduction technology. That may appeal to someone who expects to take calls in busy places, though it is not a guarantee of call quality in every setting.
This is the more natural fit for someone who wants ear hooks for workouts or values a longer stated total playback figure. The trade-off is that the information provided does not describe multiple ear-tip sizes, so there is less detail about fit adjustment than there is for the Motorola. And while its IPX5 rating is described for sweat and light rain, it is not a basis for choosing it for swimming.
• Best for an ear-hook fit → JKNKCO MS219. Its combined ear-hook and in-ear design is intended to provide a more secure hold during exercise.
• Best for a compact everyday setup → Motorola Sound Buds 135. Its compact charging case and three included tip sizes suit people who want a simple, adjustable in-ear option.
• Best stated total playback → JKNKCO MS219. It lists up to 28 hours with the case, compared with Motorola’s stated 18 hours.
• Best for a clearly split battery breakdown → Motorola Sound Buds 135. The earbuds are listed for six hours, with 12 additional hours from the case.
• Best for Bluetooth version → JKNKCO MS219. It lists Bluetooth 6.0, while Motorola lists Bluetooth 5.
• Best for single-ear listening details → Motorola Sound Buds 135. Its features specifically say each earbud can be used as a mono headset.
• Best for swimming → Neither. Both are listed as IPX5, and the descriptions point to sweat, moisture, or light rain—not swimming or submersion.
• Best for someone searching for the best foldable on-ear headphones for swimming → Neither. These are in-ear earbuds, not foldable on-ear headphones, and neither is described as swim-ready.
The search for the best Bluetooth headphones for swimming can lead to very different product categories, but these two are not designed for that purpose based on their listed water-resistance details. The JKNKCO may appeal to someone looking for ear clip headphones for swimming because of its hook, but that hook is a fit feature—not evidence of suitability in water. For pool use, the key distinction is that neither listing describes protection for submersion.
My Verdict
Neither is described as suitable for swimming. Both carry an IPX5 rating, and their listed use cases refer to sweat, moisture, or light rain rather than immersion.
JKNKCO lists up to seven hours of playback and 28 hours total with its case. Motorola lists six hours from the earbuds plus 12 hours from the case, for 18 hours total.
The JKNKCO MS219 is the more sport-focused design because it combines an in-ear bud with an ear hook intended to help keep it in place during exercise. Motorola instead offers three sizes of rubber ear tips.
Both include microphone features. Motorola lists a microphone in each earbud and mono-headset use; JKNKCO lists a built-in microphone with noise-reduction technology. The choice depends on which feature matters more to you, since these details alone do not establish a real-world call-quality winner.
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