We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-17 · 7 min read · Independent comparison
If you want to keep a pair of AirPods 4 locked in your ears during runs, workouts and bike rides, choose A-Focus Anti-Slip Set; if you need a complete, self-contained wireless earbud pair with its own charging case, choose PEICHENG Earbuds. These two products are not really rivals — one is an accessory kit for earbuds you already own, the other is a set of earbuds you'd buy instead. So the honest answer depends entirely on what's already in your pocket.
• A-Focus Anti-Slip Set — biggest strength: adjustable TPU ear hooks plus a silicone anti-lost strap that physically stop your AirPods 4 from popping out mid-run.
• A-Focus Anti-Slip Set — biggest trade-off: it's a fit-and-retention accessory only, built exclusively for AirPods 4, so it does nothing for sound, battery or Bluetooth.
• PEICHENG Earbuds — biggest strength: a full wireless package — Bluetooth 6.0, F11 titanium-diaphragm drivers, MEMS mic and a 400mAh case with a digital display for 30+ hours of total use.
• PEICHENG Earbuds — biggest trade-off: they're a separate pair of earbuds, not a fix for your AirPods, and the open-ear clip design trades isolation for awareness.
• Who each pick is for: A-Focus for existing AirPods 4 owners fighting fit problems; PEICHENG for anyone who wants one lightweight, self-sufficient pair for commuting, calls and workouts.
The A-Focus Anti-Slip Set is a small silicone-and-TPU kit with a very narrow job. It's made specifically for AirPods 4 — the listing says so plainly, and it won't fit other models. What you get is a set of C-shaped ear hooks, ergonomic wing tips, and an anti-lost strap that links the two buds together so they hang around your neck instead of bouncing down a storm drain. The hooks are the interesting part: both the length and the rotation angle are adjustable, so you can dial in the setting that matches the shape of your ear rather than accepting whatever Apple's stock shape gives you.
In my opinion, this is the product for a specific kind of frustrated AirPods 4 owner. You like the buds. You just can't keep them in. Maybe your left ear has never held a stemless design properly, or maybe they slip the moment you start sweating on a jog. The wing tips add surface contact inside the ear, the hooks wrap around the back, and the TPU material is flexible enough that you can reshape it to sit the way you want. For running, cycling, yoga or gym work, that combination is exactly the kind of insurance an accessory like this is designed for. The strap matters more than people expect, too — when you pause a workout and pull a bud out, it just dangles at your neck instead of going into a pocket or onto the floor.
PEICHENG Earbuds: Who It's For
The PEICHENG Earbuds are a genuinely different proposition: a pair of wireless Bluetooth earphones with their own charging case, sold as a complete listening setup. The headline hardware is Bluetooth 6.0 with a Lanshun 5756C chipset, which PEICHENG says delivers low power consumption, quick pairing and a stable link out to about 15 meters. Audio comes from F11 silicone titanium composite drivers, described as delivering crisp highs, rich mids and solid bass — the kind of tuning aimed at music, calls and gaming rather than critical listening.
Battery is where the spec sheet gets concrete. Each bud is rated for up to 5 hours at 70% volume, and the 400mAh case is said to support multiple full recharges for 30+ hours of total use. The case has a digital display that shows remaining power, which is a small feature I actually appreciate — no guessing whether you're carrying a full charge or a nearly dead one. There's also built-in over-voltage protection and lithium battery protection, plus a MEMS silicon microphone with noise reduction for calls in loud places.
The design is the part you need to think hardest about. PEICHENG describes an open-ear clip style with ergonomic ear hooks, a matte finish, and a compact 74.9 × 66.1 × 29 mm case weighing 54.5 g total. Open-ear means you hear your surroundings while you listen — great for running on roads, hiking or cycling near traffic, less great if you want to block out a noisy train carriage. Noise control is listed as none, and the earpiece shape is in-ear with an over-ear placement and silicone enclosure material. It supports dual connection, so it can pair with two devices at once and switch between a phone, tablet or laptop, and it works across iOS, Android and Windows.
Who should buy it? Someone who wants one lightweight pair of earbuds for commuting, calls, workouts and multi-device juggling without spending much thought on it. Who should skip it? Anyone who already loves their AirPods 4 and only needs them to stay put — buying a second pair of earbuds to solve a fit problem is the wrong tool. Also skip it if you want active noise cancellation; there is none here.
• Best for fixing AirPods 4 that fall out → A-Focus Anti-Slip Set. Adjustable hooks, wing tips and an anti-lost strap are built for exactly that problem.
• Best for total battery life → PEICHENG Earbuds. 5 hours per bud plus a 400mAh case for 30+ hours total; the A-Focus set has no battery at all.
• Best for running and cycling → both, but differently. A-Focus keeps your existing AirPods in; PEICHENG's open-ear clip lets you hear traffic while you listen.
• Best for calls and meetings → PEICHENG Earbuds. A MEMS microphone with noise reduction is something the A-Focus kit simply doesn't have.
• Best for multi-device users → PEICHENG Earbuds. Dual connection lets it pair with two devices and switch between them.
• Best for staying aware of your surroundings → PEICHENG Earbuds. The open-ear design is deliberate about not sealing you off; there's no noise control on the spec sheet.
• Best for travel and storage → A-Focus Anti-Slip Set. At 13.61 g and 2.5 x 2 x 0.5 inches, it's a fraction of the PEICHENG case's bulk.
• Best for people who don't own AirPods 4 → PEICHENG Earbuds. The A-Focus set is incompatible with everything else, so it isn't even a candidate.
If I had to pick one, I'd pick based on what's already on my desk. If I own AirPods 4 and my only real complaint is that they slide out during workouts, I'd buy the A-Focus Anti-Slip Set — it's a targeted, low-commitment fix for a specific physical problem, and the adjustable hooks are the right answer to a bad fit. If I don't own AirPods 4, or I want a second, self-sufficient pair for commuting and calls, I'd buy the PEICHENG Earbuds instead, because they're a complete product with their own power, microphone and connectivity. Two different jobs, two different answers. Neither one replaces the other.
FAQ
No. Noise control is listed as none. The MEMS microphone with noise reduction helps on calls, but the earbuds don't actively cancel ambient sound. The open-ear design is meant to let you hear your surroundings.
Up to 5 hours per earbud at 70% volume, with the 400mAh case supporting multiple recharges for 30+ hours of total use. The case has a digital display so you can see the remaining power.
They solve different problems, so value depends on your situation. If you already own AirPods 4, the A-Focus set is the cheaper way to fix a fit issue. If you need earbuds at all, the PEICHENG pair is the complete product. Check the current price on Amazon for both before deciding.
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