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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-19 · 6 min read · Independent comparison
• Ttbesmi Purple Out — biggest strength: an 18.14 g (0.3 oz) over-ear open design with a bone-conduction driver, IPX5 sweat and rain protection, and dual-mic ENC calling. Biggest trade-off: roughly 4 hours of play time per charge, so it's a session headphone rather than an all-day one.
• Traggo Airflex — biggest strength: a claimed 10-hour battery with 2-hour charging, plus a flexible plastic-and-silicone body that's built to survive drops and getting stuffed in a bag. Biggest trade-off: no IP rating listed and no noise control at all, so sweat, rain and wind are less accounted for.
• Pick Ttbesmi Purple Out if you want the lightest wear, the safest-feeling fit for outdoor workouts, and you're fine recharging often.
• Pick Traggo Airflex if you want one charge to cover a long commute, a full workday or a multi-hour ride, and you handle your gear roughly.
• Both run Bluetooth 5.3 with a 10 m range and a USB-C charge port — the real split is battery vs. weight and protection.
The Purple Out is an open-ear headphone that sits outside the ear canal entirely — Ttbesmi calls it an "out of ear" design, and the point is that nothing blocks your ear. You hear traffic, a bike bell, a colleague walking up behind you. For runners, cyclists and anyone working out near roads, that's the whole reason to buy this style rather than a sealed earbud. At 18.14 g it's about as close to nothing as a headphone gets, and the skin-friendly ABS build is aimed at long wear without pressure points.
The audio approach is a bone-conduction driver with a 20 Hz–20,000 Hz range and 20 ohm impedance, paired with directional sound transmission that Ttbesmi says limits leakage — a common complaint with open designs, so it's worth knowing they've addressed it. On calls, dual microphones with ENC noise reduction do the work, which matters if you take meetings outdoors or on a windy platform. The IPX5 nano-coating means sweat and light rain are covered, and a wipe-down keeps them presentable.
Where it gives ground is stamina. Ttbesmi lists about 4 hours of play time at 50% volume and a 1-hour charge in a 300 mAh case. That's a workout-and-commute headphone, not a leave-them-on-all-day one. If you're the type who forgets to charge, or you want music from morning to evening without a top-up, this isn't it. It's also a niche purple finish — if you want something that disappears visually, look elsewhere. Skip it if battery endurance is your number one spec, or if you'd rather have touch controls than the remote/media control buttons this one uses.
The Airflex is Traggo's take on the same open-ear idea, but the priorities are different. It also uses air-conduction over the ear — and Traggo explicitly pitches it as avoiding the "uncomfortable vibrations" some people feel from bone-conduction sets, which is a genuine differentiator for anyone who's tried bone conduction and disliked the tickle. The open design keeps you aware of your surroundings, which is why it's marketed for running, commuting and the workplace.
Battery is the headline: 10 hours of playback with a 2-hour quick charge. That's a full day of on-and-off listening, a long ride, or a whole shift without hunting for a cable. The body is plastic and silicone, and Traggo leans hard on flexibility — the build bends so a drop or an accidental step-on doesn't kill it, and it ships with a 4 x 4.5 x 2.5-inch carry case. At 12 g it's lighter than the Purple Out on paper, and the 16 mm driver with 32 ohm impedance and 96 dB sensitivity suggests an easy-to-drive, efficient set. Bluetooth 5.3, 10 m range, USB-C charging, touch controls and voice assistant support round it out, with a 40 ms latency figure that's relevant if you watch video.
The trade-offs are real. There's no IP rating listed, so sweat and rain protection isn't something Traggo commits to — a problem if you run hot or get caught in weather. Noise control is listed as "none," which is expected for open-ear but worth stating plainly. It's also a single black colorway, so no styling choice. And a 6-month manufacturer warranty is shorter than many buyers expect. Skip it if you need verified water resistance more than you need battery life.
Side-by-Side: Which Should You Choose?
• Best for battery life → Traggo Airflex. 10 hours vs. about 4 hours is the single biggest gap between these two.
• Best for sweat and weather → Ttbesmi Purple Out. IPX5 nano-coating is a stated spec; the Airflex lists no IP rating.
• Best for surviving abuse → Traggo Airflex. The flexible, bendable build and included carry case suit people who toss gear in a bag.
• Best for calls in noisy places → Ttbesmi Purple Out. Dual mics with ENC are purpose-built for that; the Airflex offers call answering but no stated noise reduction.
• Best for long commutes and all-day wear → Traggo Airflex. Fewer charging interruptions, touch controls, and voice assistant access.
• Best if bone-conduction vibration bothers you → Traggo Airflex. Air conduction sidesteps it by design.
• Best for a punchy color choice → Ttbesmi Purple Out, which comes in purple rather than black.
I'd buy the Traggo Airflex. In my opinion, battery life is the spec that quietly ruins open-ear headphones for most people, and 10 hours with a 2-hour charge covers a commute, a workout and a workday without a mid-day top-up. The flexible build and lower 12 g weight seal it for everyday carrying. But I'd steer anyone doing hard outdoor training in heat or rain to the Ttbesmi Purple Out instead — IPX5 and dual-mic ENC are the specs that actually matter when you're sweating and taking calls outside. If your day ends before your headphones do, the Purple Out is the better fit; if it doesn't, the Airflex wins.
Traggo Airflex, clearly. Traggo lists 10 hours of playback with 2-hour charging; Ttbesmi lists around 4 hours at 50% volume with a 1-hour charge. If you listen for more than a few hours at a stretch, that gap decides it.
It carries an IPX5 rating with a nano waterproof coating, which covers sweat and rain during jogs, gym sessions and hikes. The Traggo Airflex doesn't list an IP rating, so if water resistance is a must-have, the Purple Out is the safer pick.
Ttbesmi states that the Purple Out uses directional sound transmission specifically to reduce leakage, which is the usual weak point of open designs. Traggo doesn't make a leakage claim for the Airflex, so the Purple Out has the more explicit answer here.
Both are ultra-light — 18.14 g for the Purple Out, 12 g for the Airflex — and both use an over-ear hook that leaves the ear canal open. In my opinion the Airflex's plastic-and-silicone flexible build is the more forgiving one for hours of wear, while the Purple Out's ABS shell is aimed at stability during movement.
I don't quote prices here, because they change often across listings and sellers. Check the current price on Amazon using the button on this page before you decide — the value call between a 4-hour and a 10-hour headphone depends heavily on what each is going for on the day.
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