Shenzhen iSK Technology Co.,Ltd Wireless Earbuds, Bluetooth 5.4 Headphones HiFi Review

For $21, these earbuds deliver battery and connectivity in the top 5% of all models we track. The mic is fantastic, and they're built for workouts. Just don't expect them to be your perfect travel companion or to out-sound a $200 pair.

The iSK Technology wireless earbuds are a bit of a statistical anomaly. They score in the 97th percentile for battery life, promising a whopping 48 hours with the case, and land in the 96th percentile for connectivity thanks to Bluetooth 5.4. For $21, those numbers are frankly ridiculous. They're built for action, with IP7 waterproofing and a design that scores highest for gaming and fitness in our database, but they stumble a bit for travel use, which is their weakest area at just 67.7 out of 100.

Let's talk about where these buds punch above their weight class. That 96th percentile connectivity isn't just a number. Bluetooth 5.4 means a fast, stable link up to 15 meters, and the Hall effect tech means they connect the second you open the case. For sound, they sit in the 83rd percentile, driven by a 14.2mm dynamic driver that delivers solid bass and clear highs. The mic performance is a real surprise at the 94th percentile, using ENC tech to filter out background noise. The ANC is good, not great, at the 84th percentile, but for the price, it's more than you'd expect.

At $21, the value proposition here is almost comical. You're getting battery life and connectivity that rivals earbuds costing five times as much. The mic performance alone is worth the price of admission if you take a lot of calls. You're making clear trade-offs in ultimate sound fidelity and luxury comfort, but for pure feature-per-dollar ratio, these are incredibly hard to beat.

Stacked against the competition, the iSK buds win on raw specs for the money. The Nothing Ear (a) might have slightly better ANC, but it costs more and has worse battery life. The JBL Tune Buds 2 have a stronger brand name but similar performance at a higher price. The real story is that premium features like Bluetooth 5.4, IP7 rating, and a case battery display are almost unheard of in this budget tier. You're sacrificing some polish and brand prestige, but you're gaining a lot of practical, high-performing tech.

Skip these if you're a frequent flyer. Their travel score is a low 67.7, meaning the ANC, while decent, isn't strong enough to fully tackle plane cabin noise. Also, if you prioritize absolute top-tier sound quality (think 95th+ percentile), you'll want to look at more audiophile-focused models, as these land in the solid-but-not-spectacular 83rd percentile.

If you need a reliable, feature-packed pair of buds for the gym, commuting, or just daily use and you don't want to spend a fortune, these are a no-brainer. The data doesn't lie: exceptional battery, great connectivity, and a very capable mic for a pittance. Just know that if your primary use is long-haul flights or you're an absolute audio snob, there are better, more expensive options.