We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-21 · 6 min read · Independent comparison
If you want dramatically longer battery life, a genuinely waterproof design and more control over how your music sounds, choose EarFun Air True; if you need the lightest, most pocketable buds with a built-in lanyard and a built-in finder that helps you locate a lost earbud, choose Skullcandy Dime 2. Those two sentences basically decide it. Everything below is just the reasoning behind them.
• EarFun Air True — biggest strength: 35 total hours of playtime (7 hours per charge plus the case), IPX7 waterproofing, and an app for EQ and touch-control customization. That's a lot of capability packed into one set of earbuds.
• EarFun Air True — biggest trade-off: More features means more to learn. Touch controls and app-based tweaks take a little getting used to, and the buds themselves are physically larger than the Dime 2's tiny shells.
• Skullcandy Dime 2 — biggest strength: Compact, lanyard-attached, and genuinely pocket-friendly. It also has built-in Tile finding technology, so a misplaced earbud is a solvable problem rather than a lost cause.
• Skullcandy Dime 2 — biggest trade-off: The battery math is modest at 12 total hours, and the IPX4 rating handles sweat and light rain but not a dunking.
• Who each pick is for: The EarFun Air True suits someone who wants one pair of earbuds to do everything — workouts, calls, gaming, long days away from a charger. The Dime 2 suits someone who wants a cheap, featherweight backup pair that lives in a pocket or bag and is easy to keep track of.
The EarFun Air True is the more ambitious product of the two. Start with the battery: 7 hours in the buds and a 500mAh case that pushes the total to 35 hours. That's a huge gap over the Dime 2's 12 hours, and it changes how you use earbuds. You stop thinking about the charger. A quick 10-minute USB-C top-up is enough for up to 2 hours of listening, and the case itself supports wireless charging, so you can just drop it on a pad. The case takes about 2 hours to fill; the buds take about 1.5 hours.
Audio hardware is where EarFun makes its pitch. Each bud uses a 6mm PEEK + PU dynamic driver with a 20 Hz – 20 kHz range, 32 ohm impedance and 100 dB sensitivity. In plain terms, that's a warm, bass-forward tuning with enough treble to keep things from sounding muddy — helped along by an app with multi-band EQ so you can bend the sound toward your own taste instead of accepting the factory curve.
The feature list is unusually deep for this category. Four microphones with noise-canceling call processing, touch controls for playback and volume, Bluetooth 5.0 with a 10-meter range, and a game mode you toggle in the app that drops latency to under 100 ms. IPX7 is the standout, though — that's immersion-level waterproofing backed by a SweatShield coating, which is a different class of protection from the splash resistance you usually get at this tier. If you sweat heavily or train outdoors in the rain, that matters.
Buy it if you want a single pair of earbuds that handles calls, workouts, gaming and multi-day travel without babysitting the battery. Skip it if you want something you can forget in a jacket pocket for a month, or if you'd rather not deal with an app to unlock the full feature set.
The Dime 2 goes the opposite direction, and it's honest about it. Skullcandy's pitch is portability: a compact, lightweight body (the buds and case together come in around 30 grams), a rubberized case with a built-in strap, and a shape designed to disappear into a pocket. That integrated lanyard is a small thing that turns out to matter — it clips to a bag strap or a belt loop, so the case doesn't sink to the bottom of your backpack.
The headline feature is Tile finding technology. Register the product in the Tile app and you can locate a missing earbud nearby or far away. If you've ever lost a single bud down the side of a couch, you know why that's a real selling point rather than a gimmick.
Battery is the compromise. You get 3.5 hours in the buds plus 8.5 hours in the case for 12 total, and the case charges over Micro-USB in about an hour. That's a one-day-at-a-time product — fine for commutes, podcasts and short sessions, less fine for a long-haul flight or a full day of back-to-back calls. The buds use a 6mm dynamic driver with a 20 Hz – 20 kHz range, 16 ohm impedance and 95 dB sensitivity. The lower impedance means they're easy to drive from a phone, though they won't play as loudly at a given volume step as the EarFun set.
Durability is rated IPX4 — sweat and water resistant, not waterproof. Bluetooth 5.2 is a newer version than the EarFun's 5.0, and the connection is stable over the same 10-meter range. A one-year manufacturer warranty rounds it out.
Buy it if you want a tiny, cheap, easy-to-tote pair for commutes and casual listening, or a second pair you won't stress about. Skip it if battery life or water protection is high on your list.
• Best for battery life → EarFun Air True. 35 hours total versus 12. That's nearly three times the runtime.
• Best for workouts and rain → EarFun Air True. IPX7 waterproofing beats IPX4 sweat resistance for anything beyond light moisture.
• Best for calls → EarFun Air True. Four microphones with noise-canceling processing versus a standard mic setup.
• Best for sound customization → EarFun Air True. The EarFun App offers multi-band EQ plus adjustable touch controls; the Dime 2 relies on sound isolation and its default tuning.
• Best for gaming and video → EarFun Air True. Game mode in the app brings latency under 100 ms, which keeps audio in sync with on-screen action.
• Best for portability → Skullcandy Dime 2. Smaller, lighter, with a built-in lanyard strap.
• Best for not losing your earbuds → Skullcandy Dime 2. Tile finding technology is unique to this pair.
• Best as a cheap backup or travel pair → Skullcandy Dime 2. Simple, light, and easy to keep track of.
My Verdict
For battery, waterproofing, call quality and app features, yes — 35 hours versus 12, IPX7 versus IPX4, and four call microphones versus a basic mic. The Dime 2 wins on size and its Tile finding feature.
EarFun Air True: 7 hours per charge, 35 hours total with the case, and a 10-minute USB-C charge gives up to 2 hours. Skullcandy Dime 2: 3.5 hours per charge, 12 hours total with the case.
Light rain and sweat, yes — it's rated IPX4. But it isn't waterproof, so don't submerge it or wear it in heavy downpours. The EarFun Air True's IPX7 rating is the safer choice for serious wet-weather or sweat-heavy use.
Yes. Both are standard Bluetooth earbuds — EarFun uses Bluetooth 5.0 and Skullcandy uses Bluetooth 5.2, both with a 10-meter range. The Dime 2's mic is listed for iPhone and Android, and the EarFun App covers EQ and game mode on either platform.
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