How We Research
Updated: 2026-09-20 · 7 min read · Independent comparison
If you want a sleep mask that doubles as a real pair of Bluetooth headphones with a long single-charge runtime, choose PEFUPEW 3D; if you need built-in white noise tracks and a timer so you can fall asleep without your phone, choose LC-dolida White Noise.
• PEFUPEW 3D's biggest strength: a 33-hour play time, a 14.2mm dynamic driver and dual ENC microphones — this is a mask built first as audio gear, with sleep comfort layered on top.
• PEFUPEW 3D's biggest trade-off: it relies entirely on a paired Bluetooth device, so there are no on-board sounds and no sleep timer. If your phone dies, the audio stops.
• LC-dolida White Noise's biggest strength: 16 built-in soothing tracks plus a 30/90/120-minute timer, so you can drift off with no phone in the room at all.
• LC-dolida White Noise's biggest trade-off: a shorter 12–15 hour runtime per 1.5-hour charge. Fine for a night or two, but you will charge it more often.
• Pick PEFUPEW 3D if you want one gadget for music, podcasts and calls, and you want it to last several nights between charges.
• Pick LC-dolida White Noise if you want a self-contained sleep tool that quiets snoring and city noise the moment you put it on, with no setup.
The PEFUPEW 3D is, at heart, a pair of sleep headphones that happens to be shaped like an eye mask. The Bluetooth 5.3 chip pairs quickly, holds a low-power connection and reconnects automatically after the first pairing, so you set it up once and then just put it on. Inside are 14.2mm dynamic drivers and two ENC noise-reduction microphones, which means music, podcasts and phone calls all run through the mask itself. If you like falling asleep to an audiobook or a playlist — and you want to take a call without pulling anything off your head — that combination is the whole point of this mask.
Comfort is where the 3D shaping earns its name. The contour around the eyes is cut deeper than a flat mask, so your eyeballs and lashes have room to move instead of being pressed down. The band uses elastic plus a hook-and-loop closure, which adjusts to essentially any head shape and, importantly for anyone with long hair, is designed not to clamp or snag it. Side sleepers get the most out of this, since the pressure point on the temple is exactly what a flat mask gets wrong. Light blocking is handled with a layered build: dense outer fabric, a light-absorbing middle layer and a memory-foam filling, cut in 3D so it also cuts down the angled light that sneaks in around portholes and window edges on a flight.
The practical details are solid. The fabric is a soft, hypoallergenic cotton blend that stays breathable rather than sweaty, and the main body detaches so you can machine wash it — it dries in about 30 minutes without losing its shape. Battery life is the headline number at 33 hours of continuous playback, which comfortably covers 15 hours of sleep without a mid-night recharge, so people who wake easily or deal with insomnia can leave it on all night. That is also why it handles a snoring partner well: you are masking the noise with your own audio rather than silence.
Who should skip it: anyone who wants to fall asleep with nothing but white noise and no phone nearby. There are no built-in tracks and no shut-off timer here, so the audio depends on your paired device. If you also want a mask that behaves as a standalone sleep machine, this is not that product.
The LC-dolida White Noise mask is the opposite philosophy: it wants to be the only thing you need at bedtime. Instead of routing audio from your phone, it carries 16 natural, soothing white noise tracks on board. That means no pairing, no app, no screen light, no "one more scroll" before sleep — you put the mask on, pick a sound, and you are done. For light sleepers, city dwellers and anyone sharing a bed with a snorer, that immediacy is the real feature. The dual-mode design still lets you stream Bluetooth music when you want it, so you are not locked out of your own playlists.
Bluetooth 5.4 is the newer standard here, and LC-dolida pairs it with a microphone and speakers for calls and audio, plus a stated 10-meter working range. The control module is removable, which turns the whole mask into something you can fully machine wash — a genuinely useful detail, since a sleep mask sits against your face every night. The headband has been widened and given more elasticity to fit roughly 20–27 inch head sizes, and the Velcro strip is broadened so it grips and does not slide around while you turn.
Light control is where this mask pushes hardest. It uses a deep 3D eye contour plus a bottom light-blocking strip and full nose-bridge coverage, aiming for total blockage from every angle rather than just the front. There is also a triangular cutout over the nasal bridge, which gives people with congestion or a sensitive nose room to breathe. The material is a soft, breathable, hypoallergenic nylon in purple, so it stays light on the face through the night.
Battery is the trade-off. A 1.5-hour charge gets you 12–15 hours of playback — about two nights — and the three-stage timer (30 minutes for a nap, 90 for meditation, 120 for deep sleep) shuts the audio off for you so it is not running all night. That timer is the feature I would miss most on the other mask: it means you can fall asleep to sound and let it fade out on its own. Just note that the mask ships not fully charged, so plan a charge before the first night.
• Best for built-in sleep sounds → LC-dolida White Noise. 16 on-board tracks, no phone required.
• Best for battery life → PEFUPEW 3D. 33 hours versus 12–15 hours per charge.
• Best for a sleep timer → LC-dolida White Noise. 30/90/120-minute options; PEFUPEW has none.
• Best for audio quality and calls → PEFUPEW 3D. 14.2mm dynamic drivers plus two ENC microphones.
• Best for the newest Bluetooth and range → LC-dolida White Noise. Bluetooth 5.4 with a stated 10-meter range.
• Best for total blackout ambition → LC-dolida White Noise. Bottom light strip plus full nose-bridge coverage.
• Best for side sleepers with long hair → PEFUPEW 3D. Deeper 3D eye contour and a hair-friendly elastic plus hook-and-loop band.
• Best for washing → either, but differently. PEFUPEW's main body detaches and machine washes; LC-dolida's control module is removable so the whole mask can be washed.
If I had to pick one, I would buy the PEFUPEW 3D. In my opinion, the 33-hour runtime and the proper 14.2mm drivers make it the more versatile device — it covers music, podcasts and calls, and it will not need charging every other night. The LC-dolida is a smarter choice only if built-in white noise and a sleep timer matter more to you than raw audio and battery. If you already sleep with a phone or tablet at the bedside, go PEFUPEW. If you want to leave the phone out of the bedroom entirely, go LC-dolida. Either way, check the current price on Amazon before you commit.
Both use a deep 3D eye contour, so neither presses on your eyes. The PEFUPEW adds an elastic plus hook-and-loop band that is designed not to clamp hair, and the LC-dolida widens its Velcro and band to fit roughly 20–27 inch heads. For side sleepers specifically, I would lean PEFUPEW; for a broader fit range, LC-dolida.
Yes. The 16 soothing white noise tracks are built in, so you can play them with no paired device at all. Bluetooth is there for music and calls when you want it.
The PEFUPEW 3D, by a wide margin — 33 hours of continuous playback versus 12–15 hours on the LC-dolida after a 1.5-hour charge. The LC-dolida counters with a timer that stops playback automatically, so it drains less overnight.
I do not quote prices here because they change often. Both are single-pack masks with comparable build quality, so the right move is to check the live price on each Amazon listing and weigh it against the features you actually need.
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