How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-23 · 6 min read · Independent comparison
• mophie Speedport 140 — biggest strength: 140W of shared USB-C PD output across three ports, in a compact GaN block with foldable prongs.
• mophie Speedport 140 — biggest trade-off: It's a charger, not a listening device. If you came here shopping for earbuds, this is the wrong category entirely.
• Houlyn Sleep Earbuds — biggest strength: A sleep-first design — sleep mode disables touch controls and alarms, and the soft silicone tips are shaped for side sleepers.
• Houlyn Sleep Earbuds — biggest trade-off: The noise blocking is passive only (no ANC), rated to cut around 24dB, so loud continuous noise won't disappear.
• Who each pick is for: Travelers and multi-device households who are tired of carrying three chargers → mophie Speedport 140. Anyone who wants to fall asleep to podcasts or ASMR without ear pain → Houlyn Sleep Earbuds.
The Speedport 140 is a wall charger block with three USB-C PD ports and up to 140W of shared output. The headline number matters most for laptops and tablets, but the smarter part of the design is how it splits that power: mophie says it intelligently divides the 140W across all three ports, so you can charge a phone, a tablet and a pair of headphones at once instead of playing outlet roulette in a hotel room. The brand also claims an iPhone can reach 50% in about 30 minutes — a claim tied to the PD output, not to any particular phone model.
Where this charger earns its place is travel. GaN (gallium nitride) internals run cooler and let the body stay noticeably more compact than older silicon-based bricks, and the prongs fold flat into the housing. That combination — small body, no protruding plug — means it drops into a bag pocket or jacket without snagging on anything. The body is also made with 75% post-consumer recycled plastics, which is a genuine plus if you care about that sort of thing. mophie backs it with a 2-year manufacturer warranty, and it's built with short-circuit protection.
Buy it if: you carry a laptop plus a phone plus accessories, you're tired of packing multiple adapters, or you want one block that handles everything on a desk or in a carry-on. It's compatible with phones, tablets, laptops, cameras and e-readers over USB-C.
Skip it if: you only ever charge one small device at a time — you'd be paying for ports and wattage you'll never use. Also skip it if you're actually shopping for earbuds; that's the other product on this page.
The Houlyn Sleep Earbuds are the opposite kind of purchase: a small, single-purpose pair of true wireless buds aimed squarely at people who listen in bed. The model number is LX410-11 (sold as the LX410P), and the design brief is obvious from the specs — in-ear buds, plastic housing, mint green, with three sizes of soft silicone ear caps so you can find a seal that doesn't press into your ear when you lie on your side.
The feature I'd point a shopper to first is sleep mode. Click four times on any touch point and the buds switch into a state with no touch control, no low-battery alarm and no flashing light. That sounds minor until you've had a bud chirp a warning tone at 3 a.m. or change tracks because your pillow brushed the touch panel. In sleep mode, neither happens. It's a thoughtfully designed mode for a very specific problem.
Sound is handled by dynamic drivers with 16 ohm impedance, paired with Bluetooth 5.3 for pairing speed and connection stability, with a rated range of about 10 meters. Noise control is passive: Houlyn states the ergonomic fit and stabilizers create a seal that blocks up to 24dB of external sound — snoring, traffic, neighbors. The listing is refreshingly honest that there is no active noise cancelling, so don't expect silence on a plane; expect a decent reduction of steady background noise.
Battery is the trade-off to understand. Houlyn rates playback at 4–6 hours per charge (6 hours average life), with a 1-hour charge time and a total of 30 hours including the pocket-sized charging case. That's fine for a night's sleep and a commute, but it isn't an all-week endurance champ. The set includes the buds, a charging cable and a manual, and it carries a 1-year warranty.
Buy it if: you're a side sleeper, you fall asleep to podcasts, ASMR or quiet music, or you want buds that won't blast an alarm or shift tracks when you roll over.
Skip it if: you need active noise cancelling for flights or loud offices, or you want buds for long multi-day stretches between case charges.
• Best for charging multiple devices at once → mophie Speedport 140. Three USB-C PD ports sharing 140W is the whole point of the product.
• Best for sleep and side sleeping → Houlyn Sleep Earbuds. The silicone caps, stabilizers and sleep mode exist for exactly this.
• Best for travel kit space → mophie Speedport 140. Compact GaN body with foldable prongs beats a bag full of single-device adapters.
• Best for quieting a noisy room → Houlyn Sleep Earbuds. Up to 24dB of passive blocking, with the caveat that there's no ANC.
• Best for laptop-class power → mophie Speedport 140. 140W over USB-C PD is aimed at notebooks and tablets, not just phones.
• Best for overnight listening → Houlyn Sleep Earbuds. No touch control, no alarms and no flashing lights in sleep mode.
• Best for battery endurance → Houlyn Sleep Earbuds. 30 hours total with the case, against a charger that has no battery at all.
• Best for one-and-done desk setup → mophie Speedport 140. Plug in once, charge phone, tablet and headphones together.
These two products barely compete — one puts power into your devices, the other puts sound into your ears — so my recommendation depends entirely on which problem you're trying to solve. In my opinion, the mophie Speedport 140 is the better buy for most people browsing this page, simply because a 140W three-port GaN charger with foldable prongs replaces several adapters and gets used every single day. That said, if your actual goal is falling asleep comfortably with audio, the Houlyn Sleep Earbuds' sleep mode and side-sleeper fit make them the more sensible pick. Buy the mophie for your bag; buy the Houlyn for your pillow.
If you charge more than one device, yes. A basic wall adapter typically powers one device at limited wattage, while the Speedport 140 splits 140W across three USB-C PD ports and folds flat for travel. For a single phone only, a basic charger is enough. Check the current price on Amazon before deciding.
No. Houlyn lists passive noise cancellation only, with the seal blocking up to 24dB of external noise. That helps with snoring and steady background sound, but it won't silence a plane cabin the way ANC would.
The design supports it — three sizes of soft silicone caps, stabilizers for a secure fit, and sleep mode that disables touch controls and alarms. Playback runs 4–6 hours per charge, so a full eight-hour night may need a top-up from the case.
They don't overlap, so buy whichever gap is bigger in your daily routine. If you're constantly short on outlets and ports, get the mophie Speedport 140. If you're losing sleep to uncomfortable buds, get the Houlyn Sleep Earbuds.
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: MUSICOZY Sleep Headphones vs Kinglucky Clip-On Earbuds, IKG Ear Plugs vs Mudtun 2026: Tiny Sleep Earbuds, L LTGEM Case vs Paekole Sleep Earbuds: Headphones for Travel