Sleep

Rings, headbands, mattresses, and apps that claim to measure or improve sleep. Almost all of them infer sleep stages from pulse and movement rather than measuring them.

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Duva

Earbuds and a bedside case that catch what wakes you and answer it during the night.

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Anker

Sleep earbuds thin enough for side sleepers, with a case that listens for snoring and masks it.

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Hatch

A bedside light and speaker that dims you into sleep and wakes you with a slow sunrise.

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Dusq

A patch behind your ear that catches night wakings and pulls you back into deep sleep.

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Ultrahuman

Metabolic health first brand, pairing its ring with glucose sensing and recovery scoring.

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SOND

Sleep earbuds that read your breathing and your heartbeat all night, then change the audio to match.

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We track what these devices
really measure

What shipped, what slipped, and what the spec sheet leaves out. Four minutes, Tuesday mornings.

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