How We Research
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
If you want a feather-light open-ear set built for long solo runs and all-day wear, choose Jamsync Open Ear Headphones; if you need maximum playtime, a charging case and stronger water protection for sweaty sessions, choose TANFESO Open Ear Bone.
• Jamsync's biggest trade-off: IPX5 is sweat-and-light-rain friendly, not swim-or-soak proof, and there's no charging case — just the headphones and a cable.
• TANFESO's biggest strength: A 40-hour battery with a digital display charging case, bone conduction drivers, touch controls and IPX7 protection — the most endurance and weather resistance here.
• TANFESO's biggest trade-off: Clip-on ear hooks and a case add bulk to your kit, and the warranty is shorter at two months versus Jamsync's 12.
• Pick Jamsync if you want minimal weight, simple button controls and a stable fit for sprinting, cycling and commuting.
• Pick TANFESO if you want the longest possible time between charges and the confidence of IPX7 in heavy sweat or rain.
The Jamsync set is built around one idea: get out of your own way. At 22g, the silicone frame and ergonomic wrap-around design are meant to sit on your ears rather than in them, which is exactly what you want for running. No ear pressure, no sweat pooling in a sealed canal, and no constant micro-adjusting mid-stride. The open-ear shape also keeps traffic, cyclists and announcements audible — the whole reason many runners move away from noise-isolating buds in the first place.
Audio comes from 15mm dynamic drivers with neodymium magnets, covering a 20Hz–20,000Hz range. That's a balanced, everyday tuning rather than audiophile-grade sealed sound — fine for playlists, podcasts and audiobooks during a workout, not for critical listening in a quiet room. Bluetooth 5.4 handles pairing and multi-point switching between a phone and a laptop, and the built-in mic is tuned for active use, which matters if you take quick calls while out of breath.
The battery is where Jamsync makes its case: 14 hours of continuous playback on a charge that takes about 90 minutes, with a sealed magnetic charging port that keeps moisture out and removes the little rubber flap you'd otherwise eventually lose. IPX5 covers sweat and light rain. Controls are simple push buttons, so no accidental taps from a sweaty fingertip.
TANFESO Open Ear Bone: Who It's For
The TANFESO M100 takes the opposite approach: pack in capability. The headline is a 40-hour battery paired with a digital display charging case, so you can see the remaining power at a glance and go days — realistically well over a week of typical runs — between plug-ins. That alone makes it appealing if charging is the thing you always forget.
It uses bone conduction drivers rather than dynamic speakers, which changes the listening character. Bone conduction transmits through your cheekbones and leaves your ear canals completely open, so ambient awareness is arguably even more pronounced than with a speaker-based open-ear design. The trade-off is that bass and overall richness tend to feel thinner, and the sound is more about presence than punch.
The design is a clip-on with soft silicone ear hooks and a streamlined, sinking shape that TANFESO says holds steady while running, dancing or wearing glasses. At 0.18 oz (about 5g per bud), it's genuinely light despite the case. Controls are touch-based, and the mic system is tuned to pick up your voice while reducing background noise — useful for calls on the move.
Durability is the other win: IPX7 means it can handle heavy sweat, rain and even a quick accidental dunking, which is a real step up from IPX5. Bluetooth 5.4 gives a 33-foot range and auto on-and-connect when you lift the buds from the case.
Buy it if you want the longest playtime, a case with a visible battery readout, touch controls and the most water resistance. Skip it if you dislike carrying a case, prefer physical buttons, or want a longer warranty — TANFESO lists two months.
• Best for battery life → TANFESO Open Ear Bone. 40 hours plus a display case versus Jamsync's 14 hours.
• Best for minimal weight and simplicity → Jamsync Open Ear Headphones. 22g total, no case to carry, plain push buttons.
• Best for heavy sweat and rain → TANFESO Open Ear Bone. IPX7 beats Jamsync's IPX5 for wet conditions.
• Best for charging convenience → TANFESO Open Ear Bone. A sealed magnetic port is neat, but a display case that tops the buds up automatically is easier for most people.
• Best for sound body and punch → Jamsync Open Ear Headphones. 15mm dynamic drivers with a 20Hz–20,000Hz range generally deliver more weight than bone conduction.
• Best for calls on the move → TANFESO Open Ear Bone. Its mic system is specifically described as reducing background noise, while Jamsync's mic is tuned for natural voice during activity.
• Best for control style → your preference. Jamsync uses physical buttons (no misfires from sweat), TANFESO uses touch. Neither has active noise cancellation — by design, since you need to hear traffic.
• Best for warranty peace of mind → Jamsync Open Ear Headphones. 12 months versus two.
If I had to pick one for running, I'd buy the Jamsync Open Ear Headphones. In my opinion, the 22g weight, secure wrap-around fit, 14-hour battery and sealed magnetic charging port hit the sweet spot for a dedicated running headphone — you grab it, it stays put, and you don't think about it again. The TANFESO M100 is the better choice if battery life and IPX7 water resistance are your top priorities, or if you like the idea of a display case and touch controls. For most runners who just want light, stable, simple audio, I'd go Jamsync.
There's no single answer, but for running you want an open-ear or bone conduction design so you stay aware of traffic, plus sweat resistance and a stable fit. The Jamsync Open Ear Headphones (22g, IPX5, 14 hours) suit runners who want minimal weight, while the TANFESO Open Ear Bone (IPX7, 40 hours with a display case) suits those who prioritise battery and water resistance. Check the current price on Amazon before deciding, since both are affordable options.
For running specifically, look for a secure fit, light weight and at least IPX5 water resistance. The Jamsync set uses a silicone wrap-around frame with push-button controls and no case, while the TANFESO M100 uses clip-on silicone ear hooks with touch controls and a charging case. If you sweat heavily or run in rain, the TANFESO's IPX7 rating is the safer bet.
Neither of these does. Both list no active noise control, and that's intentional — the open-ear design keeps your ear canals unobstructed so you can hear cars, cyclists and other hazards while running. If you want isolation, these are the wrong category; if you want situational awareness, they're exactly right.
Jamsync Open Ear Headphones are rated for 14 hours of continuous playback and charge in about 90 minutes. TANFESO Open Ear Bone is rated for 40 hours and comes with a digital display charging case so you can top up on the go and see the remaining power. Both figures are manufacturer ratings for playback, not standby.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.
See also: Amazon Renewed Beats Studio Pro vs Audiovance Vibes 202M, KMOUK True vs Wisoqu BT 5.3, Turtle Beach Airlite Fit vs BLXSounds 2, ZIHNIC Headphones Over-Ear vs ADOOPE Kids Headphones