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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want to upgrade the fit, comfort and passive isolation of earbuds you already own, choose AZLA SednaEarfit Crystal; if you need a complete pair of true wireless earbuds with their own battery, mic and charging case, choose Skullcandy Dime in-Ear. These two products share a category on paper, but they solve completely different problems. One is a set of replacement silicone tips; the other is a finished pair of budget wireless earbuds. Knowing which problem you actually have is the whole decision.
• AZLA SednaEarfit Crystal — biggest strength: premium German LSR silicone with a naturally grippy surface, an ultra-short 4 mm core and multiple sizes, so it improves comfort, fit and passive isolation without altering your earbuds' sound signature.
• AZLA SednaEarfit Crystal — biggest trade-off: it is not a standalone audio product. It only works if you already own compatible earbuds, and AZLA explicitly lists some models (Galaxy Buds Pro, Galaxy Buds Live, AirPods Pro) as not compatible.
• Skullcandy Dime in-Ear — biggest strength: it is a complete true wireless package — earbuds, charging case, built-in mic in each bud, Bluetooth 5, three rubber tip sizes and a 12-hour total battery figure — with a 1-year US warranty.
• Skullcandy Dime in-Ear — biggest trade-off: 3.5 hours of listening per charge in the buds is short by modern standards, and the build is plastic with a basic feature set aimed at casual listening.
• Choose AZLA SednaEarfit Crystal if you own compatible earbuds and want better fit, grip and isolation from the tips.
• Choose Skullcandy Dime in-Ear if you want a ready-to-use, self-contained pair of wireless earbuds out of the box.
The SednaEarfit Crystal is a replacement earbud tip, not an earbud. That single fact filters the audience fast. It is made from LSR — liquid silicone rubber — which AZLA describes as premium, hypoallergenic German silicone. In practice that means a material chosen for skin contact and long sessions, which matters if your ears get sore or itchy after an hour with stock tips. The surface is also naturally grippy, which is the quiet hero here: a tip that holds its position is a tip that keeps your seal intact while you run, commute or move around.
So who should buy it? You own compatible earbuds — Beats Powerbeats Pro or Powerbeats Pro 2, Galaxy Buds 2, Buds or Buds+, or many other popular TWS models — and your complaint is fit, soreness, slipping or weak isolation. You should also consider it if you use IEMs with compatible nozzles and want a durable, high-tear-resistant tip. Who should skip it? Anyone without compatible earbuds, and specifically anyone using Galaxy Buds Pro, Galaxy Buds Live or AirPods Pro — AZLA lists those as not compatible, so buying it would be a wasted purchase.
Skullcandy Dime in-Ear: Who It's For
The Dime is the opposite kind of product: a complete, self-contained true wireless setup. You get the earbuds, a charging case, three rubber tip sizes, a charging cable and a manual — everything needed to listen. The battery story is clearly laid out: 3.5 hours of listening in the buds themselves, plus two full charges stored in the case, for a total of 12 hours. The case itself carries a 7-hour battery figure and takes 3.5 hours to charge from empty.
The microphone setup is more thoughtful than the price class usually suggests. Skullcandy put a mic in each bud, so you can keep one earbud in, leave the other in the case, take a call and still hear what's going on around you. That's a genuinely useful everyday pattern for people who don't want to be sealed off from the world — walking, cycling in traffic, or working in an office where someone might need your attention.
Sound comes from a dynamic driver with a 20 Hz – 20,000 Hz frequency range, Bluetooth 5 with a stated 10-meter range, and remote volume control. Noise control is listed simply as sound isolation, meaning it relies on the tip seal rather than active noise cancellation. The fit is addressed with three included rubber tips, and the housing is a curved or rounded in-ear shape. It's a plastic build with a 32 g case, and it ships with a 1-year US warranty.
Who should buy it? Someone who wants a simple, low-fuss pair of wireless earbuds for music, skating, workouts and calls, and who values being able to run one bud solo. Who should skip it? Anyone expecting long single-charge endurance or premium materials — 3.5 hours per charge means a mid-day top-up in the case for many people, and there is no active noise cancellation here.
• Best for upgrading earbuds you already own → AZLA SednaEarfit Crystal. It's the only one of the two that improves a product you already have rather than replacing it.
• Best for a complete, ready-to-use setup → Skullcandy Dime in-Ear. Buds, case, cable, tips and manual, all in one box.
• Best for long single-charge battery life → neither, honestly. The Dime gives 3.5 hours in the buds and 12 hours total with the case; the AZLA tips have no battery at all because they aren't electronic.
• Best for comfort and sensitive ears → AZLA SednaEarfit Crystal. Hypoallergenic LSR silicone and a four-size range (ML, MS, SS, SSS) built from a large ear-shape study.
• Best for passive isolation without changing your sound → AZLA SednaEarfit Crystal. The design goal is an effective acoustic seal that preserves your earbuds' original signature.
• Best for staying put during workouts → both, for different reasons. AZLA's grippy LSR surface holds the tip in place; Skullcandy's three-tip fit and rounded housing are engineered to stay in while running.
• Best for calls and hearing your surroundings → Skullcandy Dime in-Ear. A mic in each bud means you can take a call with one ear open.
• Best for compatibility confidence → Skullcandy Dime in-Ear. It works with iPhone, Android and Bluetooth devices generally, while AZLA's tips have a specific compatibility list with explicit exclusions.
• Best for people who don't own earbuds yet → Skullcandy Dime in-Ear. Buying tips without earbuds gets you nowhere.
In my opinion, the right answer depends entirely on what's already in your drawer. If you own compatible earbuds and your only real complaint is fit, comfort or a leaky seal, I'd buy the AZLA SednaEarfit Crystal — it's the cheapest way to make good earbuds feel great, and the grippy hypoallergenic silicone plus the four-size range is exactly the fix most people need. But if you don't own wireless earbuds yet, or yours are dying, I'd buy the Skullcandy Dime in-Ear instead. It's a complete package with a mic in each bud, a charging case and a 1-year warranty, and for casual listening it does the whole job. Just go in knowing 3.5 hours per charge is on the short side. Before either purchase, check the current price on Amazon — that's the number that should settle it.
No. It's a set of replacement silicone earbud tips made from LSR silicone. It has no battery, no Bluetooth and no drivers — it changes how your existing earbuds fit, seal and feel.
AZLA lists compatibility with Galaxy Buds 2, Buds and Buds+, plus the Beats Powerbeats Pro and Powerbeats Pro 2 and many other TWS models. It explicitly states the tips are not compatible with Galaxy Buds Pro, Galaxy Buds Live or AirPods Pro, so check your model first.
Skullcandy rates it at 3.5 hours of listening in the buds, with two full charges in the case for 12 hours total. The case itself holds a 7-hour charge and takes 3.5 hours to refill.
No. The Dime's noise control is listed as sound isolation, which comes from the tip seal blocking outside noise passively — not active noise cancellation. Three tip sizes are included to help you get that seal.
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