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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-27 · 6 min read · Independent comparison
• NANSLS Earbuds — biggest strength: a smart touchscreen charging case that handles music, volume, calls, EQ modes, a timer, a flashlight, a camera remote and find-earbuds without pulling out your phone.
• NANSLS Earbuds — biggest trade-off: shorter stamina. Up to 6–9 hours per charge and up to 48 hours with the case, versus the 90 hours Acjohtin claims.
• Acjohtin Sports — biggest strength: marathon-grade endurance. 8 hours per charge and up to 90 hours total, with an LED display showing the remaining power of both buds and the case.
• Acjohtin Sports — biggest trade-off: no active noise cancellation — it relies on passive isolation and a hooked, sport-first fit rather than a low-profile everyday design.
• Pick NANSLS if you want one pair for commuting, calls, movies and casual workouts.
• Pick Acjohtin Sports if you run, cycle or train hard and hate recharging.
The NANSLS Earbuds are the more feature-dense of the two, and the headline trick is the case. Instead of a plain charging pod, you get a smart touchscreen that lets you control music, volume, calls, EQ modes, wallpapers, a timer, a flashlight, a camera remote and a find-earbuds function right from the case itself. In practice that means you can skip a track, take a call or locate a misplaced bud without digging your phone out of a pocket or bag. It's a genuinely different way to use wireless earbuds, and for anyone who finds phone-first control fiddly, it's the standout reason to pick these.
On the audio side, dynamic drivers push stereo sound with what the spec sheet calls deep bass, and the built-in ENC microphones work to cut background noise so your voice comes through clearer on work calls, commutes and everyday chats. Bluetooth 5.4 handles fast pairing, stable transmission, low latency and automatic reconnection after the first setup, and compatibility stretches across iPhone, Android phones, iPad, tablets, laptops and most Bluetooth devices. Battery runs up to 6–9 hours per charge and up to 48 hours with the case, there's a battery display so you're not guessing, and Type-C charging keeps recharging simple. The in-ear design is lightweight, and the IPX7 rating resists sweat and light rain.
Who should skip it: endurance athletes and long-haul travelers who need the longest possible runtime between charges, and anyone who specifically wants over-ear hooks for a locked-in fit during high-intensity training.
Acjohtin Sports: Who It's For
The Acjohtin Sports are built around two ideas: staying powered and staying put. The 90-hour headline is the big one. A single full charge gives 8 hours of non-stop playback, and the charging case stretches the total to 90 hours, with an LED digital display showing the remaining power of both the earbuds and the case at a glance. For long-distance trips, marathon running and all-day outdoor sessions, that's the kind of headroom that means you stop thinking about charging entirely.
The fit is the other half of the story. Flexible soft silicone ear hooks pair with S/M/L interchangeable ear tips to create a snug, pressure-free anti-slip hold, so the buds lock onto your ears during running, cycling and high-intensity fitness work. The IPX7 waterproof protection shields against sweat, splashes and light rain, and the whole package is clearly designed for outdoor workouts first.
Call quality gets serious attention too: four built-in HD microphones plus ENC noise cancellation that the spec sheet says blocks up to 45dB of background noise, so calls should stay crisp even on crowded subways, busy streets or noisy gyms. Sound comes from 16.2mm oversized dynamic drivers — noticeably larger than typical earbuds — which the brand says produce powerful deep bass, bright treble and a balanced midrange. Bluetooth 6.1 delivers faster pairing and a stable 33ft range with near-zero lag, and smart touch controls let you manage music, volume, calls and voice assistants without touching your phone.
Who should buy it: runners, cyclists, gym regulars, hikers and frequent travelers who want the longest runtime and a fit that won't shift mid-stride.
Who should skip it: buyers who want active noise cancellation, a discreet low-profile look, or a smart case with extra built-in tools — the Acjohtin leans on passive isolation and a sporty hooked design instead.
• Best battery life → Acjohtin Sports. 8 hours per charge and up to 90 hours with the case beats 6–9 hours and up to 48 hours.
• Best for calls in noisy places → Acjohtin Sports. Four HD mics with ENC rated to block up to 45dB of background noise is the stronger calling spec on paper.
• Best everyday convenience → NANSLS Earbuds. The touchscreen case's EQ modes, timer, flashlight, camera remote and find-earbuds tools have no equivalent on the Acjohtin.
• Best for secure workout fit → Acjohtin Sports. Over-ear silicone hooks plus three ear-tip sizes are purpose-built to stay locked in during running and cycling.
• Best for a low-profile, all-rounder fit → NANSLS Earbuds. A lightweight in-ear design suits commuting, work and travel without the bulk of hooks.
• Best for lag-sensitive use → Acjohtin Sports. Bluetooth 6.1 with near-zero lag edges the NANSLS Bluetooth 5.4 setup for gaming and video.
• Best for the widest device compatibility → NANSLS Earbuds. Explicit iPhone, Android, iPad, tablet and laptop support covers more than phones alone.
• Best for sweat and rain → a tie. Both carry IPX7, so either survives heavy sweat and light rain.
In my opinion, the Acjohtin Sports are the safer pick for most people who will actually use these outdoors. The 90-hour total runtime, the hooked anti-slip fit and the four-mic ENC setup are the specs that matter most during real training and commuting, and the larger 16.2mm drivers point to fuller sound. But if you want one pair that does calls, music and video while giving you a genuinely useful touchscreen case, I'd recommend the NANSLS Earbuds instead — the convenience is hard to ignore. Neither is a compromise; they just solve different problems.
Open the case, take the buds out and enable Bluetooth on your phone. Both models pair automatically after the first setup — the NANSLS uses Bluetooth 5.4 and the Acjohtin uses Bluetooth 6.1, each with automatic reconnection afterwards.
Wear them in-ear, then use the touch controls on the buds to play or pause, change volume and answer calls. The NANSLS adds a smart touchscreen case for music, EQ modes and find-earbuds, while the Acjohtin relies on its on-bud touch sensors and LED battery display.
A reset usually means clearing the paired-device list and re-pairing from scratch. Check each brand's manual for the exact button sequence, since reset steps differ between the NANSLS T20 and the Acjohtin YYK-Q15.
The NANSLS runs 6–9 hours per charge and up to 48 hours with its case. The Acjohtin runs 8 hours per charge and up to 90 hours with its case, so it's the better choice for long trips and all-day outdoor use.
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