Why Everyone is Buying the Activbuds S 250 (Full Review)

Introduction: My months with the Activbuds S 250

I've been using the Activbuds S 250 for the better part of six months now. I bought them to replace an older pair of true wireless earbuds that had started to show their age, and I wanted something comfortable for running, reliable for meetings, and enjoyable for music. What I found was a surprisingly capable pair of earbuds that hit a lot of the right notes for everyday use — but they aren't perfect. In this review I’ll walk you through real-world observations from daily commuting, workouts, long work calls, and a handful of long-haul flights. I’ll share what I appreciated, what annoyed me, and the small issues that stood out after continuous use.

What I tested and how

To keep things practical, I used the Activbuds S 250 in multiple scenarios: commuting on public transit, running on packed trails, working from home with frequent video calls, and listening during long reading or study sessions. I tested the battery life with typical mixed use (music, calls, a bit of ANC), evaluated the fit during workouts and sleep, and monitored call clarity both indoors and outdoors. I also used the companion app for a few weeks to try EQ presets and firmware updates. Everything described below is based on that hands-on experience.

Design and build

Right out of the case, the Activbuds S 250 feel well put together for the mid-range category. The earbuds are matte with a slightly rubberized finish that helped them stay put in my ears even when I started to sweat. The charging case is compact enough to fit comfortably in a jacket pocket, and the magnetic lid snaps shut with a reassuring click — though I did notice a small amount of looseness in the hinge after three months, nothing catastrophic but worth mentioning.

I appreciated the understated aesthetic: no loud logos, just a clean silhouette. The touch controls are located on each bud’s outer face, and while they’re convenient, I found myself mis-triggering them occasionally when adjusting the earbuds during runs. If you prefer physical buttons over capacitive touch, that might be a downside.

Comfort and fit

Comfort was one of the first pleasant surprises. The Activbuds S 250 come with three sizes of silicone tips and a pair of foam tips in the box. I landed on the medium silicone tips for everyday wear and the foam for longer sessions. In my experience, the foam tips provided a noticeably better seal and passive noise reduction for airplane use, but they were slightly warmer after an hour of wear.

During a 45-minute run I never felt like the buds were about to fall out — they stayed secure without needing ear hooks. I also wore them for reading sessions of 2–3 hours and only experienced minimal fatigue at the outer ear after prolonged use. If you have very small or very large ear canals, trying the different tips will be essential; fit will make or break the experience.

Sound quality: What I heard

In my listening sessions I primarily used a mix of indie rock, acoustic singer-songwriter tracks, and a few electronic tracks to challenge the bass response. The sound signature of the S 250 leans slightly toward a warm, full midrange with a bass emphasis that is satisfying without being overwhelming. Vocals sound natural and forward, which made podcasts and audiobooks a pleasure to listen to.

Bass: Rich and punchy. It lacks the sub-bass rumble of high-end audiophile buds, but it’s tuned to be enjoyable for most modern music.

Mids: Clear and present. I noticed detail in acoustic guitars and vocal timbre that my older earbuds tended to smooth over.

Treble: Smooth, a touch restrained. At high volumes the treble doesn't get harsh, which is great for long listening sessions but means cymbal shimmer and the highest details aren't as crisp as some brighter-sounding competitors.

Overall, the Activbuds S 250 deliver a balanced and pleasant sound tailored to everyday listeners. I used the app’s EQ to boost treble slightly for classical and jazz, and that adjustment made a noticeable difference without introducing sibilance.

Active Noise Cancellation (ANC) and Transparency mode

The ANC on the S 250 is better than I expected for its class. It doesn’t fully cancel the roar of a plane engine like top-tier ANC models, but it significantly reduces low-frequency noise — subway rumble and air conditioning hum became much less intrusive. Where it struggled was with sudden mid-frequency sounds like human voices in a café; those still came through, albeit softened.

Transparency mode is usable and more natural than the muffled pass-through on some earbuds. I used it to order coffee and have brief conversations without removing the buds. The one caveat: in very windy conditions the mics pick up a wind noise hiss in transparency mode, making voices sound slightly processed. For quick interactions it’s fine, but for long conversations in the open I switched to taking the buds out.

Battery life and charging

Battery life is where the S 250 pleasantly surprised me. In real-world mixed use with moderate volume and occasional ANC, I averaged around 6–7 hours per charge in one earbud session, which matched the manufacturer’s nominal claims in my testing. With the charging case, I regularly got two additional full charges, bringing total available listening time to roughly 18–20 hours between full case charges.

Charging speed: A 15–20 minute top-up gave me about 1.5–2 hours of playback, which was handy when I was running late and needed a quick boost. The case supports convenient wireless charging, which I used occasionally; wired USB-C charging is faster and my daily routine relied on that.

After six months of daily use the battery capacity seemed stable — I didn’t notice a dramatic drop, though I did experience a minor dip (10–15 minutes less per charge) which I attribute to normal wear.

Connectivity, app, and features

Pairing the Activbuds S 250 was straightforward. The initial connection to my phone was quick, and switching between devices was reasonably painless, though not instantaneous. If you frequently switch between a laptop and a phone during a workday, there’s a small delay when re-connecting that can be a little annoying, but it’s never taken more than 10–15 seconds.

The companion app adds useful controls: EQ presets, customizable touch controls, firmware updates, and ANC level adjustments. I liked the custom EQ and created a "podcast" preset that boosted mids for clearer speech. The app’s interface is clean and decently responsive; firmware updates have arrived twice since I owned them, improving call stability and touch sensitivity.

One advanced feature I used occasionally was a gaming mode that lowers latency. It made a clear difference during mobile gaming sessions, reducing audio sync issues. That said, I still detected a trace of lag in fast-action games compared to wired headphones.

Call quality and microphones

I rely on earbuds for frequent calls and the Activbuds S 250 handled them well. Indoors, my colleagues said my voice sounded natural and clear. Outdoors, wind and street noise sometimes reduced clarity — the mics tried to suppress background noise, but in heavy traffic or gusty conditions I could hear the processing get aggressive and voices occasionally sound a bit hollow.

The earbuds include a noise-reduction algorithm for calls that works well in moderate ambient noise. For professional calls in very noisy environments, a dedicated headset is still preferable, but for day-to-day meetings the S 250 is perfectly usable.

Durability and everyday wear

I used the Activbuds S 250 for running (sweat), commuting (rain showers), and carrying them in pockets and backpacks. They are rated with an IP rating for sweat and light rain, and after several months there’s been no water-related failure. The silicone finish does attract lint and pocket dust over time, so I wipe them down weekly to keep the charging contacts clean. As mentioned earlier, I noticed a tiny bit of play in the case hinge after a few months, but the case still closes securely and the buds charge reliably.

One thing that bothered me was occasional touch control sensitivity: during a long phone call if I adjusted the earbud, it would sometimes pause or skip the track. It wasn’t frequent enough to be a dealbreaker, but it did interrupt a few calls and music sessions.

Pros & Cons

• Pros:
• Comfortable fit for extended wear — foam tips improve seal and comfort.
• Balanced sound with punchy bass and clear mids suitable for most music and podcasts.
• ANC that meaningfully reduces low-frequency noise for commuting and office use.
• Reliable battery life with quick-charge capability and wireless charging support.
• Useful app with EQ customization and firmware updates.
• Cons:
• Touch controls occasionally mis-trigger when adjusting the buds.
• ANC is good for the price tier but not as effective as premium models on long-haul flights.
• Call performance degrades in very windy outdoor conditions.
• Slight hinge looseness on the case after heavy daily use.

Comparison: Activbuds S 250 vs. similar options

Buying guide: Is the Activbuds S 250 right for you?

If you're considering the Activbuds S 250, here are practical points I used to decide whether to keep them and what I’d recommend you evaluate before buying:

1. What will you use them for?

If most of your time is spent commuting, working from a noisy café, or listening to podcasts and playlists at moderate volume, the S 250 is an excellent match. The ANC improves focus on public transit and the vocal-forward sound profile enhances speech clarity. If you mostly want the absolute best ANC for long-haul flights, you might prefer a higher-end model with active hybrid ANC.

2. How important is fit and comfort?

Try to get a sense of how the tips fit. The S 250 comes with foam tips and multiple silicone sizes, which I found very helpful. If you have sensitive ears or prefer very lightweight buds, these will likely be comfortable. If you sweat heavily or need ear hooks for intense workouts, consider looking for sport-focused alternatives.

3. Do you need low-latency for gaming?

The S 250 includes a gaming mode that reduces latency and worked well for casual mobile gaming in my experience. For competitive gaming where audio sync must be perfect, wired or specialized gaming headsets still perform better.

4. Are firmware updates and app controls important?

The companion app provides meaningful adjustments (EQ, ANC level), and firmware updates added incremental improvements during my ownership. If you like having these software-driven tweaks, the S 250's ecosystem is a plus.

5. Battery and charging expectations

If you need earbuds that easily last an entire travel day without recharging, the S 250’s combined earbud + case runtime is solid for mid-range devices. If you never want to worry about charging for 2+ days of heavy use, consider devices with larger cases or longer single-charge playback.

Final thoughts and conclusion

After several months with the Activbuds S 250, my overall impression is that they strike an excellent value-for-performance balance. I appreciated the comfortable fit, the warm and engaging sound signature, and the ANC that actually improves noisy commutes. The app and firmware support made the experience better over time, and the battery life fit into my daily routine without stress.

They aren’t perfect — touch controls can be fussy, call performance drops in windy conditions, and the ANC won't silence everything on a long-haul flight — but these are small trade-offs compared with the day-to-day convenience, especially at this price and feature level. For someone who wants comfortable, reliable earbuds for music, podcasts, and regular calls, the Activbuds S 250 are a very sensible pick. In my experience, they are the sort of product where the little wins add up: comfortable wear, enjoyable sound, dependable battery, and software that actually improves the device over time.

I found myself reaching for the S 250 far more often than my older earbuds, and that practical, repeated use is the best endorsement I can give. If you value comfort and balanced sound with solid ANC and a helpful app, these are worth trying — they became my daily drivers for a reason.