We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-26 · 6 min read · Independent comparison
If you want a secure, wired training pair that stays put through runs and gym sessions with no charging to think about, choose Granvela GV1; if you need ultra-thin wireless buds you can lie on your side with and forget are there, choose Xmenha Invisible Sleep. Both carry an IPX5 water-resistance rating, so both shrug off sweat and splashes — but they solve completely different problems.
• Granvela GV1 — biggest strength: memory-wire over-ear hooks plus a 3.5mm wired connection give you a locked-in, zero-latency fit for running and gym work, with a 9mm dynamic driver tuned for punchy bass.
• Granvela GV1 — biggest trade-off: it's wired, so you're tethered to your device, and it relies on passive noise isolation rather than active noise cancelling.
• Xmenha Invisible Sleep — biggest strength: an extremely thin, ultralight in-ear body (about 0.07 oz per bud) designed specifically so side sleepers aren't punished by pressure against the pillow, backed by a charging case rated to extend listening to 72 hours.
• Xmenha Invisible Sleep — biggest trade-off: each bud only runs about 3–4 hours per charge on its own, and Bluetooth means you'll need to manage pairing and charging instead of just plugging in.
• Who each pick is for: Granvela GV1 suits movers and exercisers on 3.5mm devices; Xmenha Invisible Sleep suits side sleepers, light sleepers and anyone who wants near-invisible wireless buds for bedtime listening.
The Granvela GV1 is built around one idea: staying in your ears while you move. The memory-wire earhook wraps over the top of your ear and holds its shape, which is the classic fix for earbuds that normally pop loose mid-run. Add angled nozzles that seat into the ear canal and a silicone in-ear enclosure, and you get a fit that resists the tug of a bouncing cable. For anyone who has ever stopped a workout to shove a bud back in, that design detail is the whole pitch.
On the audio side, Granvela specs a 9mm dynamic driver with a 20 Hz–20 kHz frequency range, 16-ohm impedance and 90 dB sensitivity. The 16-ohm rating matters for real-world use: it's low enough that a phone or laptop headphone jack drives it easily without a separate amp. The tuning is described as enhanced bass, which is exactly what you want for gym playlists and outdoor runs where you're competing with ambient noise. Because it's wired over 3.5mm with a 1.3m cable, there's no pairing, no battery and no latency — the audio is simply there the moment you plug in. An in-line one-button control handles calls, play/pause and track skipping, and the package includes multiple silicone tips, a shirt clip and a small pouch.
Who should buy it: runners, gym-goers and commuters who use a device with a 3.5mm jack, want a stable over-ear fit, and would rather not think about charging. The passive isolation and angled nozzle suit travel and focused listening too.
Who should skip it: anyone on a phone without a headphone jack, anyone who wants true wireless freedom, and anyone who needs active noise cancelling for loud environments. The GV1 isolates passively; it doesn't cancel.
The Xmenha Invisible Sleep exists for a very specific person: the side sleeper who wants audio in bed without an earbud jabbing into their ear. The body is deliberately mini and thin, and the L-shaped rubber ear caps are meant to sit flush so lying on your side doesn't press the bud deeper into the canal. At roughly 0.07 oz per bud, the emphasis here is on a sense-free fit — the kind of thing you can wear and, in the brand's framing, barely notice.
It's fully wireless over Bluetooth 5.2 with a 10-metre range, so there's no cable to snag on a pillow or a partner. The audio side uses a balanced armature driver with a 20 Hz–20 kHz range, and the brand cites double noise cancelling plus a "whale cavity" stereo surround treatment for a more immersive, clearer sound. There's also app-based control with noise control and sound isolation, which is unusual at this size and gives you a bit more adjustment than a simple push button.
Battery is the trade-off to understand clearly. Each bud delivers about 3.5 hours of average listening and recharges in roughly 2 hours, while the charging case is rated to extend total use up to 72 hours — essentially eight extra top-ups. So the buds themselves are a short-session product, but the case makes them a multi-night one.
Who should skip it: anyone who wants long uninterrupted single-charge listening (3.5 hours per bud is the ceiling before a case recharge), and anyone who prefers a wired, latency-free connection.
Side-by-Side: Which Should You Choose?
• Best for running and gym training → Granvela GV1. The memory-wire earhook is purpose-built to stay put; the Xmenha's thin sleep body isn't designed to survive sprints.
• Best for side sleeping → Xmenha Invisible Sleep. It's the only one of the two explicitly engineered to be thin enough to lie on.
• Best for total battery freedom → Xmenha Invisible Sleep. The 72-hour charging case dwarfs anything a wired pair needs — the GV1 simply never needs charging.
• Best for zero-latency, plug-and-play use → Granvela GV1. Wired 3.5mm means no pairing and no audio delay.
• Best for discreet, cable-free everyday wear → Xmenha Invisible Sleep. Bluetooth 5.2 with a 10m range and app controls.
• Best for passive isolation while commuting → Granvela GV1. The angled-nozzle in-ear seal blocks ambient noise without electronics.
• Best for light, barely-there comfort → Xmenha Invisible Sleep. At about 0.07 oz per bud, weight is the headline feature.
• Best for easy device compatibility → Granvela GV1. It works with any phone, tablet, laptop or player that has a 3.5mm jack.
In my opinion, the right pick comes down to one question: are you moving or are you lying down? If you train, run or commute and use a 3.5mm device, I'd buy the Granvela GV1 — the memory-wire fit, punchy 9mm driver and no-charging wired design make it the more dependable everyday sports bud. If your priority is falling asleep on your side with audio that disappears, I'd buy the Xmenha Invisible Sleep instead, accepting the ~3.5-hour per-bud runtime in exchange for that ultralight, thin fit and the 72-hour case. Neither is "better" overall — they just serve opposite moments.
are headphones waterproof
Not usually in the strict sense. Both of these carry an IPX5 rating, which means they resist splashes and sweat — not full submersion. So you can wear them in the rain or during a sweaty workout, but you shouldn't swim with them or dunk them.
are headphones water resistant
Yes, and that's the accurate label for both products here. IPX5 specifically denotes water resistance against low-pressure water jets, so sweat, light rain and splashes are fine. It's a meaningful step below waterproof, so treat both as splash-safe rather than swim-safe.
I wouldn't recommend it. The GV1 is an over-ear-hook sports design with a 1.3m cable, so lying on it would press the hook and cable against your head. Side sleeping is exactly the use case the Xmenha Invisible Sleep's thin body was designed for.
Each bud averages about 3.5 hours of listening and takes roughly 2 hours to charge. The charging case is rated to extend total use up to 72 hours, effectively giving you around eight extra recharges before you need a wall outlet.
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See also: Xmenha Mini Invisible vs AONESY Headband: Wireless Sleep, TOPOINT Sleep Headphones vs Xmenha Invisible Mini, Xmenha Flat Invisible Sleep vs NBKLS 52dB: Sleep Earbuds