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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want an open-ear sport earbud you can wear for hours while running, cycling or commuting — and still hear traffic — choose mifo FiiTii Z Open; if you need a tiny in-ear bud built specifically for side sleepers that blocks snoring and city noise, choose Ertuly Sleep Earbuds.
• mifo FiiTii Z Open — biggest strength: a 5.9g open-ear hook design with Bluetooth 5.4, dual-device pairing, IPX5 sweat resistance and up to 8 hours per charge (35 hours total with the case). It stays out of your ear canal, so you keep awareness of your surroundings.
• mifo FiiTii Z Open — biggest trade-off: open-ear means no active noise cancelling and no sound isolation at all. It's built for movement and ambient awareness, not for blocking out a snoring partner.
• Ertuly Sleep Earbuds — biggest strength: a 3g-per-bud in-ear design with ANC, soft skin-friendly materials and an LED battery display. It's shaped to stay comfortable when you sleep on your side.
• Ertuly Sleep Earbuds — biggest trade-off: 6 hours per charge (30 hours with the case) is shorter, and there's no waterproofing rating listed — it's a bedside product, not a gym product.
• Who each is for: pick the mifo FiiTii Z Open if your priority is sport, outdoor awareness and long single-charge battery; pick the Ertuly Sleep Earbuds if your priority is sleeping on your side with noise blocked out.
The FiiTii Z is an open-ear hook headphone, and that single design decision drives everything else. At 5.9g it barely registers on your ear, and because the sound outlet sits outside your ear canal rather than plugging it, you get a fit that doesn't build pressure over long sessions. The ear hook radius is under 1mm, which matters more than it sounds: it means the hook is thin enough to sit alongside glasses arms, so glasses wearers aren't fighting the frame. If you've ever taken in-ear buds out after two hours because your ears ache, this is the category that solves that.
The spec list is clearly aimed at movement. Bluetooth 5.4 gives you a stable connection with a listed range of around 12 meters, and dual-device pairing lets you stay connected to a laptop and a phone at once — useful if you take calls while working out or commuting. Battery is 8 hours per charge, with the case adding enough for roughly 35 hours total, and the case recharges in about 2 hours from a 400 mAh cell. IPX5 means sweat and light rain are fine, which covers running, cycling and high-intensity sessions. There's also ENC call noise cancellation, with the manufacturer claiming wind noise reduction up to 20 km/h — realistic for a slow ride, not a fast descent. The audio side uses a planar magnetic driver with a 20 Hz–20,000 Hz range and a stated low-leakage design that aims sound at the ear while keeping it from spilling into the room.
Who should buy it: runners, cyclists, gym-goers, commuters who need to hear announcements or traffic, glasses wearers, and anyone who wants one pair for both workouts and casual listening. Who should skip it: anyone buying primarily to sleep. There's no ANC here and no noise control at all, so it won't mask a partner's snoring or street noise — the whole point is that it lets sound in. If your bed is your main listening spot, this is the wrong tool.
The Ertuly pair is the opposite philosophy: it goes inside your ear, and it's engineered around the assumption that you'll be lying on your side for eight hours. Each bud weighs 3g, roughly half the mifo's weight, and the shell is a compact in-ear bud shape in a nude beige finish. The ergonomics are explicitly shaped so the bud sits snugly without pressing into the ear — the failure mode for most earbuds when you roll onto your side. The materials are described as skin-friendly and smooth, aimed at reducing irritation and soreness during extended wear, which is exactly the complaint that pushes people away from normal earbuds at night.
The functional core is Active Noise Cancellation. This is the feature the mifo simply doesn't have, and for a sleeper it's the whole ballgame: ANC reduces snoring, city noise and household sounds so you're not relying on volume to drown them out. Battery is 6 hours per bud with 30 hours total in the case, and there's an LED display that shows both the earbud and case power levels — genuinely useful when you're half asleep and want to know whether you need to charge before a flight or a nap. Bluetooth 5.4 with a listed 33-foot range is plenty for a bedroom. In the box you get the earbuds plus four earplugs, which suggests the brand expects you to experiment with fit and possibly use the plugs alongside.
Who should buy it: side sleepers, light sleepers bothered by snoring or traffic, people who meditate or rest with audio, and anyone whose ears get sore from regular earbuds overnight. Who should skip it: anyone whose main use is running, cycling or outdoor sport. There's no IP rating listed, so sweat and rain aren't part of the design brief, and in-ear ANC is the opposite of the ambient awareness you want when you're on a bike.
• Best for sleep and side sleeping → Ertuly Sleep Earbuds. 3g per bud, in-ear ergonomics built for lying down, soft materials, ANC.
• Best for sport and outdoor use → mifo FiiTii Z Open. IPX5, open-ear awareness, 5.9g hook that fits with glasses.
• Best for battery life → mifo FiiTii Z Open. 8 hours per charge and about 35 hours total versus 6 hours and 30 hours.
• Best for blocking noise → Ertuly Sleep Earbuds. ANC is the one feature the mifo doesn't offer at all.
• Best for calls and multi-device work → mifo FiiTii Z Open. Dual-device pairing plus ENC call noise cancellation.
• Best for charging convenience → Ertuly Sleep Earbuds. The LED display on the case shows remaining power at a glance; the mifo doesn't list one.
• Best for sensitive ears during long wear → Ertuly Sleep Earbuds. Skin-friendly materials and a 3g in-ear fit designed to avoid pressure points.
• Best all-day, wear-anywhere pair → mifo FiiTii Z Open. Open-ear comfort plus a waterproof rating makes it the more versatile everyday option.
If I had to buy one, I'd buy the mifo FiiTii Z Open — but only because my listening happens while moving, not while sleeping. The combination of Bluetooth 5.4, dual-device pairing, IPX5, 8 hours per charge and a sub-1mm hook that works with glasses makes it the more useful object across a normal day: commute, workout, calls, errands. In my opinion, it's the better single-pair purchase for most people.
That said, if your real problem is that you can't sleep because of noise and normal earbuds hurt your ears by 2 a.m., the Ertuly Sleep Earbuds is the one I'd point you to. ANC, 3g per bud and side-sleeper ergonomics solve a problem the mifo isn't even trying to solve. Different jobs, different winners — pick the one that matches where you actually wear them. And since neither is a fixed purchase forever, it's worth checking the current price on Amazon before you commit.
Ertuly Sleep Earbuds, without much debate. They're 3g in-ear buds shaped to sit without pressure when you lie on your side, with soft skin-friendly materials. The mifo FiiTii Z Open is an open-ear hook — comfortable, but designed for movement and awareness, not for lying on a pillow.
No. The spec sheet lists no noise control on the mifo FiiTii Z Open. It does have ENC call noise cancellation for calls and a low-leakage design for privacy, but there's no ANC. If blocking snoring or city noise is the goal, the Ertuly Sleep Earbuds with ANC is the right pick.
The mifo FiiTii Z Open gives up to 8 hours per charge, with about 35 hours total using the case, and the case recharges in roughly 2 hours. The Ertuly Sleep Earbuds give up to 6 hours per bud and up to 30 hours total with the case, plus an LED display showing remaining power.
They're aimed at different buyers, so value depends on your use case. If you want one pair for workouts, commuting and calls, the mifo FiiTii Z Open covers more scenarios with longer battery and a waterproof rating. If you specifically need sleep earbuds with ANC and a side-sleeper fit, the Ertuly Sleep Earbuds is the more targeted buy. Check the current price on Amazon for both before deciding.
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