How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a complete, ready-to-wear set of open-ear sport headphones with Bluetooth built in, choose Ttbesmi Skin Tone Over; if you need rugged, travel-ready protection for a pair of bone conduction headphones you already own, choose co2CREA Hard Case. Those two jobs are completely different, and that is the whole point of this comparison.
• Ttbesmi Skin Tone Over — biggest strength: It is a full audio product. Open-ear earhooks, a bone conduction driver, Bluetooth 5.4, dual mics with noise reduction, IPX5 sweat resistance, touch controls and a 20-hour charging case with an LED battery display.
• Ttbesmi Skin Tone Over — biggest trade-off: It is one specific headphone, not a storage solution. It protects itself from sweat and rain, but it does not give you a hard shell, a mesh accessory pocket or drop protection for anything else.
• co2CREA Hard Case — biggest strength: A custom-molded EVA and nylon shell with a soft lining, a mesh pocket and a dual-size insert that fits both standard and mini SHOKZ open-ear bone conduction headphones.
• co2CREA Hard Case — biggest trade-off: It is a case only. There are no drivers, no battery and no Bluetooth inside. It protects headphones; it does not play anything.
• Who each pick is for: Ttbesmi for the runner, cyclist, walker or gym-goer who needs headphones on their head today. co2CREA for the SHOKZ owner who already has the sound sorted and wants it to survive a backpack, a pool bag or a suitcase.
This is an open-ear sport headphone built around earhooks. The earpiece shape wraps over the ear rather than sitting inside it, so nothing plugs your ear canal. Ttbesmi's own framing is that this keeps you aware of your surroundings while you cycle, walk, run, drive or work out. That is the core argument for open-ear listening, and it is the reason this style exists at all. If you have ever pulled an earbud out at a busy intersection just to hear what is coming, you already understand the appeal.
The spec sheet is more interesting than the marketing. The audio driver is listed as a bone conduction driver with a 20 Hz to 20,000 Hz frequency range, and the connection is Bluetooth 5.4 with roughly a 10-meter range. Two microphones with environmental noise reduction handle calls, and controls are touch-based on the earpiece for play/pause, track skip, volume, calls and voice assistant. Battery is listed at 4 hours to charge and 20 hours of average life with the charging case, and the case has a digital LED display that shows remaining power from 1% to 100%. Waterproofing is IPX5, which covers sweat and rain splashes during sport — not swimming. The unit weighs 0.16 kg, and the color is beige.
Who should buy it: runners, cyclists, walkers and gym-goers who want music and calls without sealing off their ears, and who want the battery readout visible instead of guessing. The earpiece shape and hook design are aimed at people who find in-ear buds uncomfortable over long sessions. Who should skip it: anyone who wants maximum isolation, anyone who needs to swim with headphones on, and anyone shopping purely for a protective case. Note that IPX5 is a sweat-and-rain rating, so treat it as sport-proof, not pool-proof.
This is a carrying case, and it is a specific one. It is molded to fit SHOKZ open-ear bone conduction headphones in both standard and mini sizes — the listing names OpenRun Pro, OpenRun Pro 2 Mini, OpenMove, OpenRun Pro Mini and OpenSwim Pro among the compatible models. The dual-adapter insert is the detail that matters here. Plenty of cases only fit one size, which is a real annoyance if you own a mini-fit pair or swap between sizes. This one is designed to accept either.
Construction is hard EVA with a nylon exterior, in red, measuring 6.1 x 5.12 x 2.95 inches and weighing 0.15 kg. The interior has a soft lining and a custom-molded insert that cradles the headphones, plus a mesh pocket for cables, earplugs and small accessories. The zipper is described as sturdy and smooth, and the case is built for 360° protection against dust, moisture and impacts — the listing describes it as waterproof, dustproof and drop-resistant. There is a carry strap for clipping onto a bag. It is clearly stated as case only, so no headphones are included.
Who should buy it: anyone who already owns a compatible SHOKZ pair and moves it between gym, pool, office and travel bags. Cyclists and swimmers who toss gear into a backpack will get the most out of the hard shell. Who should skip it: anyone who does not own bone conduction headphones, and anyone expecting this to be a complete listening product. It is storage and protection, nothing more.
• Best for actually listening to music → Ttbesmi Skin Tone Over. It has the driver, the Bluetooth 5.4 chip, the mics and the battery. The case has none of that.
• Best for protecting headphones you already own → co2CREA Hard Case. Hard EVA shell, soft lining, molded insert, mesh pocket.
• Best for awareness while running or cycling → Ttbesmi Skin Tone Over. The open-ear hook design is built specifically so you keep hearing traffic and surroundings.
• Best for travel and gym-bag abuse → co2CREA Hard Case. Dustproof, moisture-resistant and drop-resistant construction with a carry strap.
• Best for call clarity on the move → Ttbesmi Skin Tone Over. Two microphones with environmental noise reduction are there to cut background noise on calls.
• Best for battery visibility → Ttbesmi Skin Tone Over. The digital LED display shows charge from 1% to 100%, and the case delivers up to 20 hours of playback.
• Best for swimmers → neither, strictly speaking. Ttbesmi is IPX5, which is sweat and rain, not submersion. The case is compatible with OpenSwim models, but it stores headphones rather than being one.
• Best for gifting to a SHOKZ owner → co2CREA Hard Case. If they already have the headphones, the missing piece is usually protection, not another pair.
My Verdict
how to wear air conduction headphones
Open-ear models like the Ttbesmi Skin Tone Over are worn with the earhook resting over the top of your ear and the driver sitting just outside the ear canal rather than pushed inside it. The hook holds the weight, so you should feel contact around the ear, not pressure inside it. Adjust until the earpiece sits stable and you can still hear the room around you.
how to use air conduction headphones
Power them on, pair over Bluetooth, then control playback with the touch panel — play/pause, track skip, volume and calls. The Ttbesmi model also supports voice assistant and AAC calls, and it auto-connects when you open the charging case and auto-charges when you drop the headphones back in. The LED display on the case tells you how much charge is left.
how to put on air conduction headphones
Slide the earhook over the top of your ear first, then settle the driver so it sits lightly against the area just in front of your ear. The Ttbesmi design is built for stable weight distribution, so once the hook is seated the earpiece should stay put during running and shaking. If it feels loose, reseat the hook rather than pushing the driver into your ear.
how to pair goodmans air conduction headphones
Pairing is the same routine across most air conduction headphones: turn the headphones on, open your phone's Bluetooth settings, and select the device from the list. The Ttbesmi unit uses Bluetooth 5.4 with about a 10-meter range, and it is listed as supporting all Bluetooth-capable phones and devices. If it does not appear, make sure it is out of the charging case and powered on.
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: stukcaze Headphone Case vs Bywulanda Upgrade USB Type, YGVCDRY Metal vs TOZO Hybrid Active Noise: Over Ear Office, FREEZE2TRIM Inductivv Bone Conduction vs Boytond Open Ear Earbuds