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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a lightweight, do-everything on-ear headphone that stays comfortable through a long commute, a night shift or a slow gym session, choose August EP636; if you need an open-ear sport headphone with modern Bluetooth, a charging case and serious battery headroom for sweaty training days, choose Micool Open Ear Headphones. Those are two genuinely different designs aimed at two genuinely different buyers, and that's the whole story here — especially for the gym.
• August EP636 — biggest strength: an ultra-light 126 g on-ear design with soft padded ear cushions, cushioned headband, rotatable speakers and an extendable headband, plus NFC tap-to-pair and Multipoint so a phone and a computer can both be connected at once.
• August EP636 — biggest trade-off: it's on-ear with no noise control, Bluetooth 4.1 rather than a modern version, and it charges over Micro USB, so it's the older-feeling of the two.
• Micool Open Ear Headphones — biggest strength: open-ear earhook fit that doesn't compress the ears, Bluetooth 5.4, ANC/ENC adaptive noise reduction for calls, four microphones and up to 18 hours per charge — up to 52 hours with the charging case.
• Micool Open Ear Headphones — biggest trade-off: it's a small 36 mm open-ear unit with a 6-month warranty description, so it's built for sport and calls rather than immersive, sealed-in listening.
• Who each pick is for: August EP636 for all-round wireless listening, calls and video on one pair of headphones; Micool Open Ear Headphones for runners, gym-goers and students who want their ears left open and their music running long.
The August EP636 is a classic wireless on-ear headphone built around weight and convenience. At just 126 grams (130 g listed in the item details) with soft padded ear pieces and a cushioned headband, it's designed to disappear on your head during long stretches — the kind of session where a heavier headphone starts to ache. The rotatable speakers and extendable headband let you dial in the fit rather than just tolerating whatever the factory shapes give you.
Battery is a straightforward proposition: a 2.5-hour Micro USB charge gives up to 12.5 hours of listening (the product information lists an average of 12 hours). That's enough for a commute week, a night shift, or several workouts. The trade-offs are equally clear. There is no noise control at all, so nothing blocks out gym clatter or traffic. Bluetooth 4.1 is an older generation, the controls are push-button rather than touch-driven in practice, and Micro USB is a legacy charging standard. Buy it if you want one lightweight pair for music, calls and video across phone and laptop. Skip it if you need sealed-in isolation or the newest wireless tech.
Micool Open Ear Headphones: Who It's For
The Micool Open Ear Headphones go the opposite direction. These are open-ear earhook headphones — the earpiece sits over the ear rather than sealing the canal, with a sponge earcup design explicitly intended not to compress the ears. The headphone diameter is just 36 mm, so they're small and light, and the earhook holds them in place while you move. That's the whole point of an open-ear sport headphone: you stay aware of your surroundings, your ears don't get hot and sore, and the fit survives sweat and motion.
Technically, they're the more current product. Bluetooth 5.4 gives faster pairing and a more stable, more reliable connection than an older chip. The audio package is a 27 mm speaker (28 mm dynamic speakers are also referenced in the feature copy) with a 20 Hz–20 kHz frequency range, and the chip uses ANC + ENC adaptive noise reduction to suppress call noise and improve voice reproduction — backed by four microphones. That's a call-focused setup, and the one-button control on each headset keeps music and calls simple mid-workout.
Side-by-Side: Which Should You Choose?
• Best for battery life → Micool Open Ear Headphones: up to 18 hours per charge and up to 52 hours with the case, versus up to 12.5 hours on the EP636.
• Best for lightweight over-ear comfort → August EP636: 126 g with padded ear pieces, cushioned headband and an extendable, rotatable fit.
• Best for open ear headphones for gym → Micool Open Ear Headphones: the earhook, sponge earcup, non-compressing open-ear design is made for movement and sweat.
• Best wireless tech → Micool Open Ear Headphones: Bluetooth 5.4 with ANC + ENC adaptive noise reduction and four microphones.
• Best for calls across two devices → August EP636: Multipoint lets a phone and a computer stay connected, with the inactive one pausing automatically.
• Best for charging convenience → Micool Open Ear Headphones: USB-C charging case with a four-stage power indicator; the EP636 charges over Micro USB.
• Best for commuting and video → August EP636: on-ear fit, 10 m range, NFC tap-to-pair and on-board music, volume and call controls.
• Best for ear awareness during training → Micool Open Ear Headphones: nothing seals your canal, so you hear your surroundings.
For the gym, I'd buy the Micool Open Ear Headphones. In my opinion, an open-ear earhook with Bluetooth 5.4, ANC/ENC call noise reduction, four microphones and 18 hours per charge (52 with the case) is the more sensible match for training — you keep your ears open, the fit doesn't compress anything, and the battery outlasts almost any workout block. If your gym time is really just background music while you also need one pair for calls and laptop video, the lighter, Multipoint-equipped August EP636 is the smarter all-rounder. It comes down to whether you want a sport headphone or a do-everything headphone.
FAQ
For training specifically, the Micool's open-ear earhook design, non-compressing sponge earcups, Bluetooth 5.4 and 18-hour battery make it the more natural fit. The EP636 works fine for lighter sessions, but it's an on-ear design with no noise control and no sweat-oriented fit features.
Yes, if you want to stay aware of what's around you. The Micool's open-ear shape leaves your canal unsealed, so you hear machines, coaches and other people while your music plays — which is often exactly what people want during a workout.
Neither data sheet states a latency figure, so I can't claim one. What I can say is that the Micool uses Bluetooth 5.4, which is the newer and generally more stable connection, while the EP636 uses Bluetooth 4.1. If low latency for kids' headphones or gaming matters most, check the current specs and price on Amazon before deciding.
The Micool has four microphones plus ANC + ENC adaptive noise reduction, which is a call-focused design. The August EP636 counters with Multipoint, letting a phone and a computer connect at once so calls interrupt your music automatically. For pure call clarity I'd lean Micool; for juggling two devices, I'd lean August. Check the current price on Amazon for both before you commit.
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