Know your body's rhythm.
Meridian reads your heart-rate variability and sleep all night, then hands you one honest number each morning: how ready you are. No screen. No feed. No subscription.
readiness score
Signals, not notifications.
Meridian measures quietly all day and says one useful thing each morning. Everything below is on the band and in the app — nothing is paywalled.
Morning readiness
Overnight HRV, resting heart rate, and sleep debt, combined into a single 0–100 score with a plain-English recommendation.
“Recovery is ahead of schedule. Today is a good day to push.”
HRV trend
7-night average: 62 ms ↑
Sleep staging
7 h 41 m last night
Skin temperature
Nightly deviation from your baseline — an early flag for strain or illness.
Battery that disappears
Charge over coffee twice a month. 80% in 45 minutes.
Your data stays yours
Every metric unlocked on day one. On-device processing, exportable history, delete everything with one tap.
Train on the days your body says yes.
Meridian doesn't count steps at you. It tells you when to push, when to recover, and when the tired you feel is real — so the hard sessions land on the right days.
It works while you don't look at it.
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One number with your coffee
Readiness 84. HRV up 9 ms on your weekly baseline. The app suggests intervals today — then gets out of the way.
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Movement, noticed — not nagged
Your lunchtime walk logs itself. No badges, no streak guilt, no buzz on your wrist during a meeting.
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A quiet wind-down cue
Based on tonight's sleep debt, Meridian nudges once: lights out by 10:30 keeps tomorrow's readiness above 80.
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Sleep staged, silently
Deep, REM and light phases sampled every 30 seconds — with the band in airplane mode until you wake.
Built to be forgotten.
You'll wear it 24 hours a day, so every gram matters. The pod is machined from grade-2 titanium; the strap is woven from recycled ocean-bound nylon and dries in minutes.
- Sensor podGrade-2 titanium · 4.2 g
- StrapRecycled ocean-bound nylon, 3 sizes
- Water resistance5 ATM — swim, shower, forget it
- ChargingMagnetic USB-C puck, 45 min to 80%
- ConnectivityBluetooth LE · works offline for 6 weeks
- ColorsMoss · Bone · Graphite
Rest is training too.
The best athletes we tested with didn't need more data — they needed permission to recover. Meridian gives it, with evidence.
First run ships this spring.
$299, one time. Waitlist members pick their color first and get lifetime firmware updates — which everyone gets anyway, because that's how it should work.
You're on the list — we'll email you before anyone else. ✓
No spam. Two emails total: one when preorders open, one when your band ships.
FAQ
Does it have a screen?
No — on purpose. A screen on your wrist becomes another feed. Meridian's job is to gather signals silently and give you one considered answer each morning in the app. If you want a watch, keep wearing your watch; Meridian sits on the other wrist and disappears.
Really no subscription?
Really. $299 buys the hardware and every metric it can measure, forever. We'd rather sell you a strap in two years than rent you your own heart rate.
Is the 10-day battery honest?
It's our measured median across the test fleet with all-night sleep tracking on. Heavy workout logging brings it closer to 8 days; airplane mode stretches it past 12. We publish the test protocol.
What happens to my data?
Scores are computed on the band and your phone. Cloud sync is off by default, opt-in for backup only, and export or full deletion is one tap. We don't sell data — there's no subscription business model to feed.
How do I get the right size?
Three strap sizes cover wrists from 135 mm to 220 mm. A printable sizing guide arrives with your waitlist confirmation, and swaps are free within 60 days.