How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want maximum playtime with a battery display and dual-device pairing, choose Groovz Open-Ear Plus True; if you need genuine IPX5 sweatproofing for hard training, choose MIPOW x Miffy Miffy.
• Groovz Open-Ear Plus True — biggest strength: up to 42 hours of total playtime with an LED battery display on the case, plus Bluetooth 5.4 multi-point pairing to two devices at once.
• Groovz Open-Ear Plus True — biggest trade-off: IPX4 durability only, so it shrugs off light sweat and splashes but is not the stronger pick for soaking-wet training.
• MIPOW x Miffy Miffy — biggest strength: IPX5 waterproof and sweatproof construction, which is exactly what the sports-focused design promises for gym sweat and rain.
• MIPOW x Miffy Miffy — biggest trade-off: 30 hours total with the case and 6 hours per charge — solid, but well short of the Groovz figure.
• Who each pick is for: Groovz for open-ear comfort, long listening sessions and clear calls; MIPOW x Miffy for sweat-heavy workouts and anyone who wants a playful, character-led design.
The Groovz Open-Ear Plus True is built around an open-ear hook design. Nothing plugs into your ear canal — the earpieces rest outside it, held by flexible, ergonomic ear hooks. That matters for two kinds of buyers: people who find in-ear tips uncomfortable over long stretches, and people who want to stay aware of traffic, a treadmill, or a training partner while music plays. The enclosure is plastic with a textured patterned finish in Blue Starry Night, and the whole package is pitched at adults and teens.
What stands out to me in the specs is the endurance story. Groovz claims up to 42 hours total — 10 hours from the earbuds themselves and 32 more from the charging case — and the case has an LED battery display so you can see the charge level instead of guessing. Bluetooth 5.4 handles the connection, and multi-point pairing lets two devices stay linked at once, which is genuinely useful if you bounce between a phone and a laptop. Touch controls cover track skipping, calls and volume. Dual microphones with noise reduction are there for call clarity, and the open-ear fit keeps your voice sounding natural because your ears aren't blocked. Sound is delivered by a dynamic driver, tuned for richer bass and clearer vocals.
Buy it if you want long battery life, open-ear awareness, dual-device pairing and a visible battery readout. Skip it if your workouts leave you drenched — IPX4 covers splashes and light sweat, not heavy soaking, and there's no active noise cancellation here, so loud environments stay loud by design. Volume control via touch is a nice touch, though some people never fully warm to touch sensors over physical buttons.
The MIPOW x Miffy Miffy takes the opposite approach: in-ear earbuds with a strong lifestyle hook. The headline is the Miffy collaboration — pastel pink buds, a semi-exposed charging case with color LED lighting, a cute Miffy doll, and a 3D reusable iron box that doubles as packaging and storage. You slide the buds out without opening a lid, which is a small but genuinely practical design choice. If you want earbuds that feel like an accessory rather than a black plastic afterthought, this is the one.
The functional case is the sweatproofing. MIPOW rates these IPX5, meaning a reinforced build that resists sweat and water splashes — rain, gym sweat, outdoor sessions. That's a real step up from IPX4, and it's the core reason to pick these over the Groovz if your training gets wet. Each bud weighs just 4 grams and is shaped to follow the ear's contour, so long wear stays stable and pain-free during movement. Bluetooth 5.3 handles a stable connection with low latency, touch sensors cover play/pause, track skipping, calls and voice assistants, and active noise cancellation is listed for cutting background noise. Sound is HD stereo with heavy bass, and the 16-ohm impedance suggests they're easy to drive from a phone. Charging is USB-C with a claimed one-hour fast charge for the case: 6 hours per charge, 30 total.
Buy it if sweatproofing, a stable in-ear fit and a fun design top your list. Skip it if you need marathon battery life, open-ear awareness, or multi-device pairing — none of those are here, and the age range is listed as kid, so the styling skews playful rather than neutral.
Side-by-Side: Which Should You Choose?
• Best for sweatproofing → MIPOW x Miffy Miffy. IPX5 vs IPX4 is the single clearest spec gap between these two.
• Best for battery life → Groovz Open-Ear Plus True. Up to 42 hours total versus 30, with a 10-hour single-charge figure versus 6.
• Best for multi-device users → Groovz Open-Ear Plus True. Bluetooth 5.4 with multi-point pairing to two devices at once; the MIPOW lists Bluetooth 5.3 with no multi-point claim.
• Best for awareness and comfort → Groovz Open-Ear Plus True. Open-ear hooks keep your ear canal clear and your surroundings audible.
• Best for noisy environments → MIPOW x Miffy Miffy. Active noise cancellation is listed; the Groovz explicitly lists noise control as none.
• Best for calls → Both are reasonable. Groovz leans on dual mics with noise reduction; MIPOW leans on noise reduction for clear calls.
• Best for a lightweight in-ear fit → MIPOW x Miffy Miffy. 4-gram buds contoured to the ear, stable during movement.
• Best for a fun, giftable design → MIPOW x Miffy Miffy. The Miffy doll, iron box and pink finish are the whole point.
If sweat is your deciding factor, I'd buy the MIPOW x Miffy Miffy. IPX5 is the spec that actually protects the electronics when a workout gets messy, and the 4-gram contour fit plus a one-hour case charge make it the more natural gym companion. In my opinion, the Groovz Open-Ear Plus True wins on almost everything else — 42 hours total, a battery display, dual-device pairing and open-ear awareness are a lot of practical upside — but IPX4 is a real ceiling for heavy training. So: heavy sweater, choose MIPOW. Long-session listener who wants to hear the world, choose Groovz. Check the current price on Amazon before you commit, since that's the one variable I can't weigh in for you.
what are sports earbuds
Sports earbuds are earbuds designed to stay put and survive movement — typically with secure hooks or contoured in-ear shapes, sweat and water resistance, and touch controls you can use mid-workout. The MIPOW x Miffy Miffy fits that brief with IPX5 sweatproofing and 4-gram in-ear buds; the Groovz leans on flexible ear hooks and IPX4 splash resistance.
how to wear sports earbuds
Open-ear models like the Groovz rest outside your ear canal, held by the flexible ear hooks, so you stay aware of your surroundings. In-ear models like the MIPOW x Miffy Miffy sit inside the ear following its natural contour — the specs describe a snug, stable, pain-free fit for long wear.
how to connect sports earbuds
Both are wireless Bluetooth earbuds with no headphone jack. Power them on, enable Bluetooth on your phone, and select the earbud from the device list. The Groovz uses Bluetooth 5.4 and can pair with two devices at once; the MIPOW uses Bluetooth 5.3 and is listed as compatible with iPhone, Samsung, Huawei, Android phones, PC and most wireless players.
how to use sports earbuds
Both rely on touch controls rather than buttons. On the Groovz you can skip tracks, answer calls and adjust volume by touch; on the MIPOW you can play/pause, skip tracks, answer and end calls, and trigger Siri or Google Assistant. The Groovz adds an LED battery display on the case so you can check charge at a glance.
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