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If you want a simple, purpose-built replacement charging cord for specific AfterShokz bone-conduction headsets, choose Yoidesu Charging Cable; if you need actual wireless open-ear earbuds for running, cycling and workouts, choose ACEFAST AceFit Air Open.
• Yoidesu Charging Cable — biggest strength: It is a dedicated, no-nonsense charging cable built for AfterShokz AS800 and ASC100 headsets, with TPE construction and multi-protection circuitry.
• Yoidesu Charging Cable — biggest trade-off: It is a cable, not a listening device. It only charges the two listed models and has no audio function whatsoever.
• ACEFAST AceFit Air Open — biggest strength: True wireless open-ear earbuds with Bluetooth 5.4, a charging case, and a waterproof rating aimed squarely at sport.
• ACEFAST AceFit Air Open — biggest trade-off: It carries no wired jack and relies entirely on its battery, so you are tied to charging cycles and a case you must remember to carry.
• Who each is for: Yoidesu is for someone who already owns an AS800 or ASC100 headset and lost or damaged the original cord. ACEFAST is for someone who wants a complete wireless audio solution for training.
The Yoidesu Charging Cable is a specialised accessory. Its whole reason for existing is to recharge two specific bone-conduction headset models — the AfterShokz AS800 and the ASC100 — through a USB connection. It is a male-to-female connector with four pins, sold as a single unit, and it weighs a mere 16 grams, so there is nothing bulky about it in a bag or pocket.
What it does best is the boring part done properly. Yoidesu builds the cord from premium TPE, which is a material chosen for flexibility and durability rather than looks, and states that the cable runs at a low working temperature. That matters more than it sounds: a charging cord that stays cool is a cord that is not straining, and Yoidesu ties that directly to service life. The cord also lists output short-circuit protection, overvoltage protection, overload filtering and good anti-interference performance. In plain terms, it is designed to filter the messy parts of a USB power feed and hand your headset something clean. Yoidesu also claims small DC ripple and high working efficiency, which is the technical way of saying the charging itself should be quick and stable.
Who should buy it? Someone who already owns an AS800 or ASC100 and has a dead, frayed or lost original cable. That is the entire audience. You are not shopping for sound here — you are replacing a part.
ACEFAST AceFit Air Open: Who It's For
The ACEFAST AceFit Air Open is a completely different category of product: a pair of true wireless open-ear earbuds. Open-ear means the earpiece sits outside your ear canal rather than plugging into it, so you keep some awareness of your surroundings while audio plays. ACEFAST pairs that design with Bluetooth 5.4, a dynamic driver rated at 38 ohm impedance, and a touch-control interface.
The feature list is clearly aimed at movement. ACEFAST rates the earbuds IP66 for water resistance, which is a meaningful step beyond basic splash protection — it is the rating you want for sweat-soaked runs, light rain and grimy gym sessions. Battery is another headline: ACEFAST states up to 30 hours of playtime with the charging case, while the average life of the earbuds themselves is listed at 25 hours, with an 8-hour charge time. So the case is doing real work as a top-up station across a week of workouts. There is also a two-year manufacturer warranty listed, which is a reassuring detail on a product that will live in a gym bag.
What it does best, in my reading of the spec sheet, is remove friction from training audio. No cable, no jack — connectivity is wireless only — and no need to think about charging every single day. The open-ear shape is the right call for cycling and road running, where sealing off your ears is genuinely a safety question. The all-black finish keeps it low-key.
Who should buy it? Runners, cyclists, walkers and gym-goers who want music and podcasts without blocking their ears, and who want one pair to cover the whole week.
Side-by-Side: Which Should You Choose?
• Best for replacing a lost or broken headset cord → Yoidesu Charging Cable. It is the only one of the two that does this job.
• Best for listening to music at all → ACEFAST AceFit Air Open. Yoidesu has no audio function.
• Best for running, cycling and workouts → ACEFAST AceFit Air Open. IP66 and an open-ear fit are built for sweat and road awareness.
• Best for a set-and-forget charging routine → ACEFAST AceFit Air Open. The case pushes total playtime toward 30 hours.
• Best for long-term durability of a simple accessory → Yoidesu Charging Cable. TPE build, low working temperature, and protection against short circuit, overvoltage and overload.
• Best for minimal clutter → Yoidesu Charging Cable. At 16 grams it is a fraction of the bulk of earbuds plus a case.
• Best for buyers who own an AS800 or ASC100 → Yoidesu Charging Cable. Compatibility is limited to those two models.
• Best for buyers who want an all-in-one audio product → ACEFAST AceFit Air Open. Bluetooth 5.4, touch controls, dynamic drivers and a carry case in one purchase.
If I had to pick one, I would buy the ACEFAST AceFit Air Open. It is a complete product rather than a spare part: it plays audio, survives sweat and rain at IP66, runs on Bluetooth 5.4 with touch controls, and leans on a charging case for roughly 30 hours of total playtime. For anyone who actually wants to listen while they train, that is the whole job done in one box.
The Yoidesu Charging Cable is a good answer to a much narrower question — and if you own an AS800 or ASC100, it is the right answer. But it charges a headset; it is not a headset. Unless that is precisely what you are missing, ACEFAST is the one I would put in my bag.
No — they are different product types. Yoidesu is a USB charging cord for AfterShokz AS800 and ASC100 headsets. ACEFAST is a pair of wireless open-ear earbuds. They are not substitutes for each other.
The spec sheet lists a charging station (the case) and wireless Bluetooth connectivity, with no headphone jack. It does not list a separate charging cable, so plan on using the case as your power source.
ACEFAST lists up to 30 hours of playtime with the charging case, and an average battery life of 25 hours for the earbuds. A full charge is listed at 8 hours.
They are not really comparable on value because they do different jobs. Yoidesu solves one problem for owners of two specific headset models; ACEFAST gives you a whole listening device. Check the current price on Amazon for each and decide which job you actually need done.
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