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Head-to-head buyer guide

Manta Sleep Mask PRO vs Re-Timer 3

Specs, prices, editor verdict, and who should buy which, compared side by side.

By Ryan · Founder
Updated Jul 9, 2026

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Quick verdict

Manta Sleep Mask PRO (entry, $85) vs Re-Timer 3 (mid, $220). Different tools for different jobs (see the per-product details below).

Compared on 0 shared specs · same category (sleep).

Manta Sleep Mask PRO blackout sleep mask
Manta Sleep

Sleep Mask PRO

The $85 sleep mask that fixed jet lag and red-eye sleep for half of founder Twitter.

PRICE
$85
View at Manta Sleep →
Re-Timer 3 circadian light therapy glasses - Adelaide-made wearable for jet lag, shift work, sleep phase shifting
Re-Time

Re-Timer 3

The wearable answer to a problem the desk-based light box never solved: how to actually get bright light onto your retina at the times that move your circadian phase, without sitting still for 30 minutes.

PRICE
$220
View at Re-Time →
The verdict

We have not scored these two head to head, so this page does not name a winner. The Manta Sleep Mask PRO starts at $85 and the Re-Timer 3 at $220. The per-buyer recommendations below say who each one suits.

Who should buy which

Pick the Manta Sleep Mask PRO if

Frequent travelers, anyone with light pollution, partners on different schedules, side-sleepers who hate flat masks pressing on their eyes.

Skip if

You sleep in a perfectly dark room and never travel - the cheaper Manta Original ($25) does the job.

Pick the Re-Timer 3 if

Frequent transcontinental travelers wanting to pre-shift before flights, shift workers, anyone with delayed sleep phase who can't fall asleep before 1-2am, light-deprived northern-latitude workers in winter, founders with chronically-shifted Monday-morning starts.

Skip if

You already use a 10,000-lux desk light box consistently and the desk-bound protocol fits your schedule. Or you have any photosensitive condition (migraine, retinal disease) - consult an ophthalmologist first.

Go deeper

FULL REVIEW
Read the Manta Sleep Mask PRO review →
FULL REVIEW
Read the Re-Timer 3 review →

Frequently asked

Which is better, the Manta Sleep Mask PRO or the Re-Timer 3?

We have not scored these two head to head, so this page does not name a winner. The Manta Sleep Mask PRO starts at $85 and the Re-Timer 3 at $220. The per-buyer recommendations below say who each one suits.

How much do they cost?

Manta Sleep Mask PRO: $85. Re-Timer 3: $220. Prices are verified against the manufacturer; check the live links for current pricing.

Who should buy which one?

Manta Sleep Mask PRO: Frequent travelers, anyone with light pollution, partners on different schedules, side-sleepers who hate flat masks pressing on their eyes. Re-Timer 3: Frequent transcontinental travelers wanting to pre-shift before flights, shift workers, anyone with delayed sleep phase who can't fall asleep before 1-2am, light-deprived northern-latitude workers in winter, founders with chronically-shifted Monday-morning starts.

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