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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-23 · 6 min read · Independent comparison
• chalvh Ear buds — biggest strength: a full in-ear sport package: Bluetooth 5.4 with a 15 m range, 14 mm titanium-diaphragm drivers, 4 mics with ENC call noise reduction, active noise cancellation, IP7 waterproofing, and a 50-hour total playtime with a smart LED battery display.
• chalvh Ear buds — biggest trade-off: they seal into your ear canal, so you lose a lot of ambient awareness — something runners sharing roads with cars should think hard about.
• TANFESO Open Ear Bone — biggest strength: an open-ear bone conduction design that sits outside the ear canal, so you stay aware of approaching cars and hazards, plus a touch-screen charging case and 40 hours of playtime.
• TANFESO Open Ear Bone — biggest trade-off: no active noise cancellation and no passive canal seal, so bass and isolation are naturally weaker, and it carries a shorter two-month warranty than the chalvh's one-year coverage.
• Pick chalvh Ear buds if you want immersive, noise-cancelled sound for the gym, treadmill and commute.
• Pick TANFESO Open Ear Bone if you run or cycle outdoors and safety awareness matters more than deep bass.
The chalvh Ear buds are built around Bluetooth 5.4 with a high-sensitivity antenna that pushes audio transmission to 48 Mbit/s, cuts latency to 100 ms and extends range to 15 meters. In practice that means a stable, near-instant connection when you pull them from the case and a signal that survives a phone left on a bench while you move around a gym floor. Each bud weighs just 3 g and uses soft ear hooks with a curved, canal-following shape, which is the classic recipe for a sport fit that stays put through jumping, sprinting and burpees.
Sound and calls are where this pair makes its case. The 14 mm titanium-diaphragm dynamic drivers cover a 20 Hz–20,000 Hz range with AAC/SBC encoding, and four microphones with ENC work to strip out roughly 80% of background noise on calls. Add active noise cancellation and an IP7 nano coating that shrugs off sweat and rain, and you have a pair that genuinely suits running, HIIT and humid summer sessions. Battery is the headline: 8 hours on a single charge, a 1.5-hour USB-C top-up, and a charging case with an integrated LED display showing both case and bud status.
Who should buy it: runners and gym-goers who want isolation, punchy sound and long battery, and anyone who takes calls mid-workout. Who should skip it: cyclists and road runners who need to hear traffic, and anyone who dislikes the plugged-ear feeling of an in-ear seal.
The TANFESO Open Ear Bone takes the opposite approach. It uses a bone conduction driver mounted in an open-ear, clip-on housing, so nothing enters your ear canal. The stated benefit is awareness: because your canal stays open, you can hear approaching cars and other hazards while music plays. For outdoor runners, cyclists and anyone training on shared paths, that is a real safety argument rather than a marketing line.
The M100 weighs 0.18 oz and uses soft silicone ear hooks with an ergonomic surround and a streamlined sinking design that the brand says keeps it stable through running and dancing — and, notably, while wearing glasses. Connectivity is Bluetooth 5.4 with a 33-foot range, auto on-and-connect when you lift them from the case, and low-latency audio. The charging case has an intelligent touch screen for music and call control plus an LED display, and the built-in mic system is tuned to pick up your voice while reducing background noise. Playtime is rated at 40 hours total, and the whole thing is IPX7 waterproof and finished in black plastic.
Who should buy it: outdoor runners, cyclists and glasses-wearers who value situational awareness and a pressure-free fit. Who should skip it: anyone who wants deep bass and noise cancellation, or who prioritizes a long warranty — the TANFESO carries a two-month warranty versus the chalvh's one-year coverage.
Side-by-Side: Which Should You Choose?
• Best for noise isolation and immersive sound → chalvh Ear buds. Active noise cancellation plus a sealed in-ear fit and 14 mm titanium drivers.
• Best for total battery life → chalvh Ear buds. 50 hours total with 8 hours per charge versus the TANFESO's 40-hour rating.
• Best for long runs where you want to stay alert → TANFESO Open Ear Bone. 40 hours of playtime is plenty for a training week, and the open fit stays comfortable over distance.
• Best for sweaty, rainy workouts with a sealed fit → chalvh Ear buds. IP7 waterproofing with a nano coating and 3 g buds.
• Best for glasses-wearers → TANFESO Open Ear Bone. The clip-on silicone hook design is explicitly built to sit alongside glasses.
• Best for call clarity in noisy places → chalvh Ear buds. Four mics with ENC targeting roughly 80% background-noise reduction.
• Best for easy on-device control → TANFESO Open Ear Bone. The touch-screen charging case gives you a visible control surface.
In my opinion, the chalvh Ear buds are the better all-round buy for most people. They give you active noise cancellation, a bigger driver, four-mic ENC calling, IP7 sweat protection, a 50-hour battery system with an LED display, and a one-year warranty — a more complete package for gym work, treadmill runs and commuting. I would only steer you to the TANFESO Open Ear Bone if you run or ride outdoors and genuinely need to hear your surroundings; that awareness is the whole reason to accept weaker bass and no noise cancellation. Check the current price on Amazon before you decide, since that can shift the math.
FAQ
what are the best bluetooth headphones for running
what are the best bluetooth earbuds for running
Look at fit stability, water resistance and battery. The chalvh Ear buds pair soft ear arches with IP7 waterproofing, 8 hours per charge and 50 hours total. The TANFESO Open Ear Bone offers a clip-on open-ear fit rated at 40 hours total and IPX7 waterproofing, with the bonus of hearing traffic while you run.
Generally no, and the specs here show why: the TANFESO uses a bone conduction driver with no canal seal and no noise cancellation, so bass and isolation are limited. The chalvh uses 14 mm titanium dynamic drivers with active noise cancellation, which produces fuller, more isolated sound. The trade-off is that open-ear designs let you hear your surroundings.
Both are rated for water resistance — the chalvh at IP7 with a nano coating, the TANFESO at IPX7 — so either can handle sweat and rain. The chalvh's sealed in-ear fit keeps sweat out of the canal more effectively, while the TANFESO's open design dries quickly and stays comfortable. Warranty differs: one year for chalvh, two months for TANFESO.
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