We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-23 · 6 min read · Independent comparison
If you want a sweatproof pair of earbuds that doubles as a fun, giftable object you'll actually enjoy pulling out of your bag, choose MIPOW x Miffy Miffy; if you need maximum sweat and water protection with longer battery life for serious gym and outdoor training, choose Rinsmola Headphones.
• MIPOW x Miffy Miffy — biggest strength: a genuinely distinctive Miffy-themed design with a lid-free charging case, LED lighting and a Miffy doll, plus IPX5 sweatproofing and a very light 4g-per-bud fit.
• MIPOW x Miffy Miffy — biggest trade-off: IPX5 covers sweat and splashes but not full water immersion, and the 6-hour single-charge playtime is the shorter of the two.
• Rinsmola Headphones — biggest strength: IP-X7 waterproofing, 6–8 hours per charge with up to 40 hours total, Bluetooth 5.4 with ultra-low latency and four ENC mics for calls.
• Rinsmola Headphones — biggest trade-off: the design is plain, functional tech — no character, no display-piece appeal, and it leans on passive noise isolation rather than active cancellation.
• Who each pick is for: MIPOW x Miffy Miffy for casual movers, commuters and anyone who wants personality in their earbuds; Rinsmola Headphones for heavy sweaters, runners and gym regulars who treat earbuds as equipment.
The MIPOW x Miffy Miffy earbuds are built around a single idea: make earbuds something you're happy to look at. The pastel pink shells sit in a semi-exposed, lid-free charging case with colour LED lighting and a small Miffy doll, so you slide the buds out instead of flipping a lid. The packaging is a reusable 3D iron box, which is the kind of detail that makes these an easy gift rather than a purely functional purchase.
On the sports side, the spec sheet is honest about what you get: IPX5 waterproof and sweatproof, which covers gym sweat, rain and splashes — but not swimming or dunking. Each bud weighs about 4g, and the ergonomic shape is designed to sit in the ear's natural contour, so long wear stays comfortable and the fit holds during movement. Bluetooth 5.3 handles pairing and stability, touch controls cover play/pause, track skipping and calls, and you can trigger Siri or Google Assistant with a tap. Sound is HD stereo with heavy bass and noise reduction for clearer calls. Battery life is 6 hours per charge and 30 hours total with the case, which tops up over USB-C in about an hour.
Rinsmola Headphones: Who It's For
The Rinsmola Headphones (model G21 Pro) are aimed squarely at people who sweat. IP-X7 waterproofing is the headline: dust-proof and rain-proof, and rated for the kind of moisture that gym sessions, outdoor runs and hot weather throw at you. Each bud weighs just 3.6g with a 360-degree weight distribution design, and you get three sizes of silicone ear caps (S/M/L) so you can dial in a fit that stays put. The charging case has an anti-sweat matte coating and a sandblasted texture that's designed to resist slipping out of your hand or pocket while you're moving.
The audio and connectivity specs are the other half of the story. Bluetooth 5.4 with flash pairing connects in about a second, and Rinsmola claims reduced power consumption, better signal stability and stronger interference immunity versus the previous version. Latency is listed at 14.2ms, which matters if you watch video or game on your phone. The 14.2mm graphene drivers with a triple-layer composite diaphragm are tuned for boosted bass, and four ENC microphones are there to isolate background noise so your voice stays clear on calls. Battery life is 6–8 hours per charge with up to 40 hours total from the case, recharged over USB-C in about 1.5 hours, and a dual LED display shows the exact charge level of the case and each bud — a small thing that genuinely reduces battery anxiety.
Buy these if your earbuds live in a gym bag, if you run or cycle outdoors in any weather, or if you want long battery life, low latency and call clarity without thinking about it. Skip them if you want earbuds that look like a design object, or if you prefer active noise cancellation — this model uses passive isolation rather than ANC.
Side-by-Side: Which Should You Choose?
• Best for heavy sweat and rain → Rinsmola Headphones. IP-X7 beats IPX5 when moisture is the enemy.
• Best for battery life → Rinsmola Headphones. Up to 40 hours total versus 30 hours on the MIPOW pair.
• Best for the lightest possible fit → Rinsmola Headphones. 3.6g per bud versus 4g, plus three ear cap sizes to fine-tune the seal.
• Best for low-latency video and gaming → Rinsmola Headphones. Bluetooth 5.4 with 14.2ms latency is the more responsive setup.
• Best for calls in noisy places → Rinsmola Headphones. Four ENC mics versus the MIPOW pair's noise reduction for call clarity.
• Best for casual workouts, commuting and everyday listening → MIPOW x Miffy Miffy. IPX5 sweatproofing is plenty for gym sessions and light rain.
• Best for kids and teens → MIPOW x Miffy Miffy. The playful look and easy slide-out case make it the friendlier first pair.
In my opinion, the Rinsmola Headphones are the better buy for anyone whose main reason for owning earbuds is sweat — that's the angle this comparison turns on. IP-X7 waterproofing, 3.6g buds, three ear cap sizes, 40 hours of total playtime and Bluetooth 5.4 with 14.2ms latency is a spec set built for training, not for looking pretty. I'd still pick the MIPOW x Miffy Miffy if the Miffy design is what makes you want to wear earbuds at all — IPX5 covers sweat and splashes fine, and 30 hours is not a small number. But for pure sweatproof sports duty, Rinsmola wins on paper. Check the current price on Amazon before you commit, since that's the one variable I can't weigh for you.
what are sports earbuds
Sports earbuds are wireless earbuds designed to stay stable and survive moisture during movement. Both models here qualify: the MIPOW x Miffy Miffy pair uses IPX5 sweatproofing and a 4g ergonomic fit, while the Rinsmola G21 Pro uses IP-X7 waterproofing, 3.6g buds and three ear cap sizes.
how to wear sports earbuds
Insert each bud so it sits in your ear's natural contour, then twist slightly until it feels locked in. The MIPOW x Miffy Miffy buds are shaped for that contour fit, and the Rinsmola model ships with S/M/L ear caps so you can pick the size that seals properly — a good seal is what keeps buds from slipping mid-run.
how to connect sports earbuds
Both are Bluetooth-only, no jack. Turn on the buds, open your phone's Bluetooth settings and pair. The MIPOW x Miffy Miffy pair uses Bluetooth 5.3 and works with iPhone, Samsung, Huawei, Android phones and PCs; the Rinsmola G21 Pro uses Bluetooth 5.4 with flash pairing in about a second and a 15-metre range.
how to use sports earbuds
Use the touch controls: tap to play or pause, skip tracks, adjust volume and answer or end calls. The MIPOW x Miffy Miffy buds also let you trigger Siri or Google Assistant, while the Rinsmola G21 Pro adds voice assistant activation too — and its LED case display tells you exactly how much charge is left before you head out.
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See also: MIPOW x Miffy Miffy vs Vikye Open Ear: Sweatproof Earbuds, MUZHIXIANG Headphones vs Generic 3-in-1: LED Digital Display, AILIHEN Headphones vs JOYWISE Headphones