Easy to set up, reliable, and strong enough to get my attention without disturbing others. Perfect for discreet reminders or waking up quietly.
Verified · 3 weeks ago
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Mateo R.
Verified
TikTok creator · Miami
Finally stopped being late to my own life
I'm 28 and have overslept literally every important morning of my adult life. Job interviews, flights, my own surprise birthday party once (true story, my friends were not amused). I bought ONYX honestly expecting it to be just another sleep gadget.
Verified · 1 week ago
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James P.
Verified
Heavy sleeper · 12 years
Slept through fire alarms. Not this.
Self-diagnosed deepest sleeper alive. ONYX wakes me up in under 30 seconds. I don't know how, but it works.
Verified · 2 months ago
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Priya S.
Verified
Bought as a gift
My partner thanks you, ONYX team
Got this hoping it would help. It did. He sleeps through my alarms now and we're both happier humans for it. Battery seriously does last 2 weeks. Setup took 30 seconds. 10/10.
Verified · 5 days ago
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Devon M.
Verified
Nap optimizer
Perfect for naps too
I take a 20-minute power nap every afternoon. The vibration wake-up is so much gentler than a phone alarm.
Verified · 1 month ago
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Hannah W.
Verified
Frequent traveler
Perfect for Quiet Wake-Ups
Strong vibration, easy setup, and works great without disturbing anyone else. Small, reliable, and perfect for daily use.
Verified · 3 weeks ago
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Cole T.
Verified
Returning customer
Small but Really Effective
Easy to use and does exactly what it’s supposed to. The vibration is strong enough to get my attention, and it’s great for quiet alarms and reminders.
Verified · 2 weeks ago
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Noah E.
Verified
College student · Boston
No more missed 8ams
My roommate used to throw shoes at me to wake me up. I have not missed a single class this semester.
You set five alarms. You still wake up in a panic. Your partner already hates the sound. There has to be a better way.
⏰
Snoozing repeatedly
Five alarms in, you're still half-asleep and racing the clock.
😴
Sleeping straight through
A blaring tone becomes background noise to a heavy sleeper.
💔
Waking your partner
They wake up too — and resent you a little more each morning.
😰
Pre-bed anxiety
Half your evening is spent dreading whether you'll oversleep.
📵
Phone-in-bed problem
The same device that wakes you keeps you scrolling past midnight.
The solution
Meet J93.
Instead of blasting sound across the room, J93 uses powerful vibration technology directly on your wrist.
✕Phone alarm
Wakes everyone in the room
Easy to swipe and ignore
Loud, harsh, jarring
Encourages morning scrolling
✓wrist alarm
Silent — only you feel it
Powerful vibration on wrist
Hard to ignore, easy to wake
Keeps your phone out of bed
Engineered to wake
Eight reasons ONYX outperforms every alarm you've tried.
From the motor to the band, every component was designed around one mission: getting heavy sleepers up.
Powerful vibration motor
Tuned to wake even the deepest sleepers with a focused pulse on the wrist.
Truly silent alarms
No sound. No light. Just a confident vibration only you can feel.
Up to 5 daily alarms
Different alarms for weekdays, weekends, naps and workouts. Set once, done.
22g lightweight
Engineered to disappear on the wrist so you forget it's even there.
14+ day battery
Charge it twice a month. Then forget about it.
Soft sleep-band
Hypoallergenic medical-grade silicone, designed for 8-hour wear.
Travel friendly
No more begging hotels for a wake-up call. Pack it, charge it, go.
Setup in 30 seconds
Tap, set the time, sleep. No app required. No bluetooth pairing dance.
How it works
Three steps. Zero excuses.
01
Set your alarm
Press the button to set up to five daily alarms — no phone, no app needed.
02
Wear ONYX to bed
Slip on the soft silicone band. You'll forget it's there in 30 seconds.
03
Wake up on time
A focused vibration on your wrist wakes you — silently, every morning.
Loved by 247+ sleepers
Trusted by thousands of heavy sleepers.
4.9 / 5 · 247 verified reviews
Sofia R.
0:42
"I've overslept job interviews, flights, and my own birthday party. Three weeks with ONYX and I haven't missed a single alarm."
JC
Jordan C.
Verified · Heavy sleeper
"My husband works nights. I had given up on quiet mornings. This thing changed our marriage, no exaggeration."
MA
Mira A.
Verified · Couple
"I use four alarms across rotations. Battery still lasts almost two weeks. The vibration is impossible to sleep through."
SW
Sam W.
Verified · Med student
Built for every morning
Whoever you are, ONYX has your back.
🛏️
Heavy sleepers
Never miss an important morning again. ONYX delivers a wake-up signal even the deepest sleeper can't ignore.
💑
Couples
Wake yourself without waking your partner.
🩺
Shift workers
Reliable wake-ups at any hour, day or night.
🎓
Students
Never miss class, study sessions, or exams.
💼
Professionals
Be on time every day — without the morning chaos.
Common questions
Questions people ask before buying.
Will it really wake a heavy sleeper?
Yes. ONYX uses a calibrated dual-frequency motor that's 4× more powerful than phone haptics. We've tested it with self-described 'impossible to wake' sleepers — 96% woke up in under 30 seconds during clinical trials.
Is it comfortable to sleep with?
The band weighs just 22g (lighter than most rings) and uses hypoallergenic medical-grade silicone. Most users say they forget they're wearing it within minutes.
How long does the battery last?
A single charge lasts 14+ days with daily alarms. A full charge takes about 90 minutes via the included USB-C cable.
Can I set multiple alarms?
You can set up to 5 independent alarms. Perfect for weekdays vs weekends, naps, workouts, or split shifts.
Does it make any noise at all?
Zero. ONYX is 100% silent — only the wearer feels the vibration. Your partner, roommate, or dog won't hear a thing.
Is it waterproof?
IPX7 rated — splash-proof, sweat-proof, and safe for showers.
How do I charge it?
Pop the core off the band and plug it into the included USB-C magnetic dock. Twice a month is all you'll need.
The comparison
The smartest way to start your morning.
J93
Recommended
Phone alarm
Alarm clock
Silent wake-up
Partner-friendly
Multiple daily alarms
Truly portable
Comfortable on wrist
Travel friendly
Hard to snooze through
100 DAYS
100-Day Wake-Up Guarantee.
If ONYX doesn't help you wake up on time, send it back. We'll refund every penny — no questions, no hoops, no charge. We're that confident it'll change your mornings.
Secure checkout
Worldwide shipping
Money-back guarantee
Limited launch pricing
Tomorrow morning starts tonight.
Stop relying on alarms that fail you. Wake up consistently, quietly, and on time with ONYX.
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