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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want replacement earbud tips that upgrade comfort, grip and passive isolation on earbuds you already own, choose AZLA SednaEarfit Crystal; if you need a single wearable that combines a smartwatch, Bluetooth earbuds and a speaker, choose Tuanzi D8Pro. These two products sit in completely different categories, so the real question is which problem you're actually trying to solve — keeping the earbuds you already like, or replacing your watch and earbuds with one gadget.
• AZLA SednaEarfit Crystal — biggest strength: Premium hypoallergenic German LSR silicone with a naturally grippy surface and an ultra-short 4mm eartip core that fits a wide range of true-wireless earbuds, including Beats Powerbeats Pro and Powerbeats Pro 2.
• AZLA SednaEarfit Crystal — biggest trade-off: It is a tip-only product, not a device. It explicitly does not fit Galaxy Buds Pro, Galaxy Buds Live or AirPods Pro, so compatibility must be checked before buying.
• Tuanzi D8Pro — biggest strength: Three functions in one package — a 2.01" touchscreen smartwatch, a pair of TWS Bluetooth earbuds, and a speaker — with health monitoring, GPS via your smartphone, NFC and calls.
• Tuanzi D8Pro — biggest trade-off: Earbud music time is listed at 4–5 hours per charge, and the watch's GPS is phone-dependent rather than standalone. It's a value-packed multi-tool, not a specialist in any one area.
• Who each pick is for: AZLA for anyone whose earbuds fit fine electronically but hurt, slip or leak sound; Tuanzi for anyone who wants watch-plus-earbuds convenience without carrying two separate devices.
The SednaEarfit Crystal is, at heart, a comfort and fit product. AZLA builds it from German liquid silicone rubber — hypoallergenic, soft, and designed for people who wear earbuds for hours and start feeling irritation long before the battery dies. That "premium hypoallergenic" framing isn't marketing fluff in this category: silicone hardness and surface texture are the two things you feel most directly, and LSR is chosen precisely because it stays gentle on sensitive ears over long sessions.
The second thing that stands out is the sticky surface. LSR has a naturally grippy feel, so the tips resist sliding out during workouts, commutes and everything in between. If your current tips pop loose when you jog, chew, or turn your head, this is the design fix. The tips create an acoustic seal that improves passive noise isolation while — per AZLA — preserving the original sound signature of your earbuds. That matters: a good seal usually means more bass and less outside noise, but AZLA is explicit that it isn't trying to re-tune your earbuds.
Buy it if you own compatible earbuds and your complaint is comfort, slippage or weak isolation. Skip it if you have AirPods Pro, Galaxy Buds Pro or Galaxy Buds Live, or if you're shopping for a whole new device rather than an accessory.
Tuanzi D8Pro: Who It's For
The D8Pro is a genuinely different proposition: one wearable that folds a smartwatch, a pair of Bluetooth earbuds and a speaker into a single product. You wear the watch, and the earbuds store inside the main body — which Tuanzi says can recharge them for 2–3 cycles. That's the core idea, and it's a smart one for anyone tired of juggling separate charging cases.
On the watch side, the 2.01" TFT touchscreen (240×296) runs a full-touch interface with six switchable UI styles and app-personalized watch faces via the FaceLink app. The feature list is long and practical: heart rate and sleep monitoring, step count, distance and calories, thirteen named indoor and outdoor workout modes, sedentary and hydration reminders, weather, breathing training, alarm, stopwatch, timer, calculator, calendar, bedside light, phone-finding, shake-to-photo and a real-time vibration motor. There's an address book and frequently-used contacts too, and calls run over Bluetooth 5.3 with a magnetic charge system.
The earbuds are controlled entirely by touch. Tap either ear to play or pause; triple-tap for the voice assistant; double-tap the left earbud for the previous track or long-press to lower volume; mirror that on the right for next track and volume up. Calls: single tap to answer or hang up, long press to reject, long press to adjust volume mid-call. Battery is 28mAh per earbud with a stated 4–5 hours of music time, while the watch's 240mAh cell is rated at 15 days or more of life. Charging is magnetic and takes 1–2 hours.
Compatibility is broad — iOS 12 and above, Android 7.0 and above, Harmony 3 and above — and the package includes an extra silicone case, with a silicone strap alongside the steel strap option on this black steel version. It's also listed as waterproof, and GPS works through your smartphone rather than on its own.
Side-by-Side: Which Should You Choose?
• Best for fixing earbud comfort and fit → AZLA SednaEarfit Crystal. Hypoallergenic LSR silicone in ML, MS, SS and SSS sizes is the whole point of the product.
• Best for keeping earbuds in during workouts → AZLA SednaEarfit Crystal. The naturally grippy LSR surface is designed to resist slipping when you move.
• Best for passive noise isolation → AZLA SednaEarfit Crystal. It creates an acoustic seal while, per AZLA, preserving your earbuds' original sound signature.
• Best for watch-plus-earbuds convenience → Tuanzi D8Pro. One wearable replaces a watch, a charging case and a speaker.
• Best for battery life → Tuanzi D8Pro. The watch is rated at 15 days or more, and the body recharges the earbuds 2–3 times over.
• Best for fitness tracking → Tuanzi D8Pro. Heart rate, sleep, steps, distance, calories and thirteen workout modes beat any earbud tip.
• Best for earbud music time per charge → Tuanzi D8Pro's earbuds are rated 4–5 hours, so if you need all-day continuous listening, neither product is built for that — but the watch's recharging case helps bridge the gap.
• Best for people who already love their earbuds → AZLA SednaEarfit Crystal. You keep the sound you like and change only the interface with your ear.
In my opinion, the honest answer depends on which product you were actually shopping for — these aren't competitors, they're answers to different questions. If your earbuds fit, charge and sound fine but hurt after an hour or fall out when you run, I'd buy the AZLA SednaEarfit Crystal. It's a focused, well-specified fix: hypoallergenic LSR silicone, a grippy surface, an ultra-short 4mm core, and a size range built from analyzing over 1,500 ears. Just confirm your model isn't on the incompatible list first. If instead you want to consolidate devices and get fitness tracking, notifications and music from one wearable, the Tuanzi D8Pro is the more interesting buy — just go in knowing the earbuds are a 4–5 hour proposition and GPS leans on your phone.
No. AZLA explicitly lists it as not compatible with Galaxy Buds Pro, Galaxy Buds Live and AirPods Pro. It is compatible with Beats Powerbeats Pro and Powerbeats Pro 2, Galaxy Buds 2, Buds and Buds+, and many other popular wireless earbuds. Check your specific model before ordering.
The earbuds have 28mAh batteries with a stated music time of 4–5 hours. The watch body can recharge them for 2–3 cycles, and the watch itself is rated at 15 days or more of use. Charging is magnetic and takes 1–2 hours.
Per AZLA, no — the design aims to improve passive sound isolation by creating a better acoustic seal while preserving the original sound signature. A proper seal typically also means you hear more low end and less background noise, but the tips aren't intended to re-tune your earbuds.
They sit in different product categories — one is a set of replacement earbud tips, the other is a smartwatch with built-in earbuds — so the comparison isn't apples to apples. Check the current price on Amazon using the button on this page for each.
The earbuds are the TWS component of the system and pair over Bluetooth 5.3, controlled by touch gestures for music, calls and the voice assistant. The watch body serves as their storage and charging dock; Tuanzi presents the three functions as one combined device.
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