How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a single-ear mono earbud built for calls and effortless switching between two devices, choose Nokia Solo Bud 2; if you need open-ear hooks that stay put through sweaty workouts with a much bigger total battery reserve, choose UDFINE Open-Ear Headphones.
• Nokia Solo Bud 2 — biggest strength: Bluetooth multipoint that pairs and switches between 2 devices, plus up to 20 hours of talk time with the charging case.
• Nokia Solo Bud 2 — biggest trade-off: It's a mono earbud, so no stereo music listening, and its IPX4 rating is splash-resistant rather than waterproof.
• UDFINE Open-Ear Headphones — biggest strength: Open-ear hooks with IPX6 water resistance and 40 hours total playtime, designed to stay comfortable during long active sessions.
• UDFINE Open-Ear Headphones — biggest trade-off: Single-use playback is listed at 6 hours, so heavy users will lean on the case, and the 2-hour charge time is not instant.
• Who each pick is for: Nokia Solo Bud 2 fits callers and multi-device users; UDFINE OpenFit fits runners, gym-goers and anyone who dislikes in-ear tips.
The Nokia Solo Bud 2 Pro is a mono earbud, meaning one earpiece, not a pair. That single design decision tells you almost everything about who it serves. It's built around talking — the spec sheet leads with Environmental Noise Cancellation for cleaner voice pickup, up to 20 hours of talk time when you count the charging case, and a compact case that measures roughly 2 inches wide and 1 inch tall so it slips into a pocket without a second thought.
The headline feature for this comparison is multipoint connectivity. The earbud pairs with two devices at once and switches between them for calls, music and video. In practice that means your laptop can hold the connection for a work call while your phone stays linked for incoming calls — you don't re-pair every time you move between them. Google Fast Pair handles the initial setup on Android, and Bluetooth 5.3 with a stated 33-foot range keeps the link stable across a room.
UDFINE Open-Ear Headphones: Who It's For
UDFINE's OpenFit takes the opposite approach: nothing goes inside your ear canal. The earbuds hang on adjustable over-ear hooks, which is the whole point — no pressure inside the ear, and you stay aware of traffic, gym announcements and people around you. The materials are listed as soft and skin-friendly, and the design is explicitly aimed at all-day wear without the fatigue that in-ear tips can cause.
Battery is where UDFINE pulls ahead on paper. You get 6 hours of single-use playback and up to 40 hours total with the charging case, so a week of workouts or commutes between charges is realistic. The case itself takes about 2 hours to fill. IPX6 is the other standout: it resists rain, sweat and corrosion, which puts it a clear step above splash-only protection for running and outdoor sessions.
The audio hardware is a 11 ohm impedance design with 97.5 dB sensitivity and a 20 kHz frequency response, paired with Bluetooth 5.4 — the newer wireless standard of the two here. It also supports multipoint connection, so it can hold two devices at once just like the Nokia. Calls rely on ENC to cut ambient noise, which matters when you're taking a call on a windy street. Touch controls handle playback, and the cream white finish keeps things understated.
Buy it if you run, train outdoors, or simply can't tolerate earbuds jammed in your ears. Skip it if you want maximum call endurance per charge or a form factor that disappears into a pocket — open-ear hooks are more visible and the 6-hour single-charge figure is modest.
Side-by-Side: Which Should You Choose?
• Best for multipoint pairing across two devices → both. Nokia Solo Bud 2 and UDFINE OpenFit each list Bluetooth multipoint, so this is a genuine tie on paper.
• Best for total battery reserve → UDFINE Open-Ear Headphones. 40 hours total with the case is roughly double Nokia's talk-time figure.
• Best for workouts and rain → UDFINE Open-Ear Headphones. IPX6 beats IPX4, and the open-ear hook fit is designed to stay put during movement.
• Best for stereo music → UDFINE Open-Ear Headphones. Nokia's mono earbud is a single earpiece; UDFINE is a true wireless pair.
• Best for discreet one-ear use → Nokia Solo Bud 2. A 4.54 g earbud and a case about the size of a small tin is far more pocketable.
• Best for newer Bluetooth → UDFINE Open-Ear Headphones. Bluetooth 5.4 versus Nokia's 5.3, a small but real generational gap.
• Best for Android quick setup → Nokia Solo Bud 2. Google Fast Pair gets you connected with minimal fiddling.
In my opinion, the right pick comes down to your ears and your calendar, not a spec sheet winner. If your day is calls — jumping between a laptop and a phone, one ear free, case in a pocket — I'd buy the Nokia Solo Bud 2. Multipoint plus up to 20 hours of talk time is exactly the combination a heavy caller needs.
If you'd rather never push a tip into your ear canal again, and you want something that survives sweat and rain with 40 hours of total playtime behind it, I'd buy the UDFINE Open-Ear Headphones. It's the more versatile listening device of the two; Nokia's mono design simply isn't trying to compete there. Check the current price on Amazon before you commit, then match it to how you'll actually use them.
FAQ
how to pair multiple headphones
how to pair multiple headphones iphone
On iPhone, pair the first device through Settings, then pair the second the same way; a multipoint headset keeps both listed and switches automatically when audio starts. The Nokia Solo Bud 2 uses Google Fast Pair, which is an Android convenience — on iPhone you'd pair it the standard Bluetooth way.
how to pair multiple headphones on ipad
The process is the same as iPhone: connect the headset in Bluetooth settings, then connect your second source device. If the headset supports multipoint, like the Nokia Solo Bud 2 or UDFINE OpenFit, it will hold both links and route audio to whichever device is playing.
how to pair multiple bluetooth headphones
Pairing several headsets to one phone is normal — the phone remembers each one and you pick which is active. What you can't do is play one stream through two headsets simultaneously without extra hardware; multipoint solves the reverse problem, letting one headset follow you between two devices.
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