We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-18 · 7 min read · Independent comparison
If you want tiny in-ear buds that disappear into your ears and stay put through hard, sweaty workouts, choose Obbug True; if you need open-ear headphones that keep you aware of traffic, coworkers, and the world around you while you listen, choose Butyoef Open Ear Headphones.
• Obbug True — biggest strength: A genuinely mini in-ear design with IPX7 sweat and rain protection and a charging case that tops the buds up two to three more times, for roughly 22 hours of total playback.
• Obbug True — biggest trade-off: In-ear sound isolation means you block out your surroundings, and the charging case itself is not waterproof.
• Butyoef Open Ear Headphones — biggest strength: Air-conduction, open-ear fit that never plugs your ears, plus newer Bluetooth 5.3, a wider 33-foot range, and an LED display on the case.
• Butyoef Open Ear Headphones — biggest trade-off: Open-ear designs trade bass depth and isolation for awareness, and the specs list a shorter single-charge working window than the Obbug's case-boosted total.
• Who each is for: Obbug True for runners, gym-goers, and small-eared listeners who want sealed, locked-in sound. Butyoef for drivers, commuters, and anyone who needs to hear what's happening around them.
The Obbug True is built around one idea: get small. These are true wireless in-ear buds with a rounded-tip shape and a plastic body, and the pitch is a secure fit for "all shapes of ears" — which matters most if standard earbuds have always felt loose or fallen out on you. The IPX7 rating on the buds themselves is the real headline here. That's the kind of protection that survives heavy rain or a soaked shirt during an intense workout. Just note the charging case is not waterproof, so you can't toss the whole kit in a wet gym bag without thinking.
Battery is the second thing that stands out. The buds give you around five hours of talk or play time per charge, and the 600mAh case recharges them two to three times over, which the description totals at roughly 22 hours of playback. There's also up to 120 hours of standby, so the buds aren't dead every time you pull them out of a drawer. Bluetooth 5.1 handles pairing and reconnection, and the specs claim stable audio within about 10 to 12 meters — fine for a home or a small gym floor.
Controls are all on the earbud surface: single press for play/pause and calls, double press to reject, triple press to skip tracks, long press for volume. If you like physical-feeling touch controls rather than digging out your phone, that's a plus. The brand also lists wide compatibility with iPhone, Samsung Galaxy, iPad, and most other Bluetooth devices.
Butyoef Open Ear Headphones: Who It's For
The Butyoef takes the opposite approach. Nothing goes inside your ear canal. Instead, silicone ear hangers rest the buds against your ear, and sound is delivered by air conduction. The stated benefit is comfort and safety: no plugged ears, no pressure on the eardrum, no soreness after long sessions, and full awareness of your surroundings. If you've ever hated the "stuffed" feeling of in-ear buds on a long drive or a full workday, this is the design that fixes it.
The audio story is built around two named technologies. ACS panoramic audio simulates a 360-degree surround field, and DireectPitch directional sound field technology is meant to keep sound pointed at you rather than leaking out into the room — which matters in a quiet office or on a call next to other people. For calls specifically, there's AI bi-directional noise cancellation that forms an adaptive beam and aims at the caller's voice while filtering background noise. That's the most useful feature here if you take meetings on the move.
Connectivity is a genuine step up: Bluetooth 5.3 with a 33-foot range, longer than the Obbug's listed 10 to 12 meters. The case includes an LED display, which is a small but genuinely handy touch — you can see power status without guessing. It's IPX7 rated too, so sweat and light rain aren't a problem. The body is described as ultra-lightweight with skin-friendly silicone to reduce friction against your ear contour, and the fit is claimed to stay stable even when you're moving around a lot. On battery, the case holds a 300mAh cell with three power levels shown, and the description promises all-day use — though the sheets don't give a precise per-charge hour figure the way the Obbug's do.
Who should buy it: Drivers, commuters, office workers in meetings, travelers, and anyone who wants music or calls while staying alert to their environment. Who should skip it: Bass lovers and anyone who wants full sound isolation on a noisy flight or train.
• Best for intense workouts and rain → Obbug True. IPX7 on the buds plus a secure in-ear fit is exactly what sweaty training and bad weather demand.
• Best for staying aware of your surroundings → Butyoef Open Ear Headphones. Open-ear air conduction means traffic, announcements, and coworkers stay audible.
• Best for battery confidence over multiple days → Obbug True. A 600mAh case that recharges the buds two to three times, roughly 22 hours total, plus 120 hours of standby.
• Best for calls in noisy places → Butyoef Open Ear Headphones. AI bi-directional noise cancellation with an adaptive beam is aimed squarely at clear voice pickup.
• Best for the latest Bluetooth and longest wireless range → Butyoef Open Ear Headphones. Bluetooth 5.3 and a 33-foot range beat the Obbug's 5.1 and roughly 10-to-12-meter claim.
• Best for comfort over long sessions → Butyoef Open Ear Headphones. No ear-canal pressure and skin-friendly silicone are designed for all-day wear.
• Best for small ears that lose normal buds → Obbug True. The mini, rounded-tip in-ear shape is built for a locked-in fit.
• Best for easy status checks on the go → Butyoef Open Ear Headphones. The LED display on the case tells you power at a glance.
In my opinion, most people comparing these two should buy the Butyoef Open Ear Headphones. The open-ear design, Bluetooth 5.3, 33-foot range, LED display, and AI call noise cancellation make it the more versatile daily companion for driving, meetings, and travel — the situations where you actually want to hear the world. I'd only switch to the Obbug True if your priority is sealed, sweat-proof in-ear sound for running and gym work, where its IPX7 buds and case-boosted battery clearly win. Decide based on whether you want your ears open or closed, and check the current price on Amazon before you commit.
For running, I'd lean Obbug True. Its IPX7 buds and secure in-ear fit are designed for sweat and rain, while the Butyoef's strength is awareness — good for outdoor cycling or walking, less ideal for sealed, locked-in workout audio.
Butyoef states its DireectPitch directional sound field technology is designed to keep audio pointed at you and prevent leakage. That's the brand's claim based on the listed specs, and it's the feature meant to protect privacy in quiet spaces.
Obbug True gives the more concrete numbers: about five hours per charge, a 600mAh case that recharges the buds two to three times, roughly 22 hours total, and up to 120 hours of standby. Butyoef promises all-day use with a 300mAh case and three power levels, but doesn't list a precise per-charge figure.
Yes — that's one of its main selling points. The AI bi-directional noise cancellation forms an adaptive beam to isolate the caller's voice and filter out background noise, which suits meetings and calls on the move.
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