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CYOK Band
Coming SoonPerformance · Strain · Recovery

CYOK Band

Screenless Precision Engineered for High-Output Days & Recovery.

Coming Soon · VIP Early AccessNo subscription

Designed without a screen, watch face, or notification pings, CYOK Band disappears on your wrist or bicep so you can focus entirely on performance. Includes two quick-swap architectural straps in the box: a breathable Perforated Sport Fluoroelastomer strap for high-sweat training and swimming, plus a Woven Performance Nylon strap for all-day comfort and sleep.

1. Select Finish / EditionObsidian Black Perforated Sport
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Biometric & Hardware Capabilities

Includes both Perforated Sport & Woven Nylon straps in the box
Logarithmic Day Strain (0.0–21.0) & Strength Muscular Load Engine
Multi-wavelength Optical PPG (HR, RMSSD HRV, SpO2) + Skin Temperature
Dedicated Wrist & Bicep Placement Calibration for accurate step filtering
Haptic Smart Wake Alarm during your lightest sleep stage
No subscription — full access to all 9 CYOK intelligence pillars
Technical Specifications
Architecture
100% ScreenlessZero LED distractions, zero notification popups
Biometric Array
Dual-LED Green/Red/IR PPG + NTC Skin Temp + 3-Axis MEMSCalibrated for nocturnal RMSSD HRV & high-cadence workouts
Battery Life
7–10 Days ContinuousMagnetic fast charge to 100% in ~75 minutes
Straps Included
2x Quick-Swap Bands1x Perforated Hydro-Sport Strap + 1x Architectural Woven Nylon
Water Resistance
5 ATM / IP68 (50m)Pool swimming, open water, cold plunge & sauna rated
EMF & Sync Control
BLE 5.3 + Quiet / Low-EMF ModePause continuous polling; sync on pull-to-refresh or charger
In the Box
  • CYOK Band Sensor Core (Anodized Alloy Chassis)
  • Perforated Sport Fluoroelastomer Strap
  • Architectural Woven Nylon Strap
  • Magnetic USB-C Fast Charging Dock
  • Full CYOK iOS App Access (EN & RO) — No Subscription

All 9 CYOK Intelligence Pillars Included with CYOK Band

No subscription.

PILLAR 01

Morning Readiness & Recovery Intelligence

A locked, manipulation-free morning score calibrated against your 14-day personal baseline—with zero anxiety.

PILLAR 02

Sleep Architecture, Recovery Index & Smart Alarm

4-stage sleep hypnograms, nocturnal heart-rate stabilization curves, dynamic sleep debt planning, and gentle haptic wake.

PILLAR 03

Day Strain (0–21), Strength Trainer & GPS Workouts

Cardiovascular zone load meets mechanical weightlifting tonnage so low-HR heavy sessions are never under-reported.

PILLAR 04

Overnight Vitals & Symptom Radar

Multi-parameter biometric deviation tracking that catches physiological strain 24–48 hours before you feel run down.

PILLAR 05

Stress Monitor, Autonomic Biofeedback & Longevity

Real-time daytime autonomic arousal separation, live HRV-guided breathwork, and biological cardiovascular aging velocity.

PILLAR 06

Lifestyle Journal, Habit Correlation & Self-Experimentation

Turn your body into a clinical N=1 lab—discovering exactly which habits boost or sabotage your HRV and deep sleep.

PILLAR 07

Cycle & Hormone Phase Intelligence

Physiology-aware scoring that respects natural luteal thermal and heart-rate shifts instead of penalizing your recovery.

PILLAR 08

Precision Hardware Hub, Calibration & Low-EMF Mode

Dedicated optical calibration for wrist, bicep, or finger placement, Quiet Low-EMF sync control, and safe OTA firmware updates.

PILLAR 09

Ecosystem, Widgets, Localization & Data Ownership

Your biometrics belong to you—with on-device Physician PDF reports, iOS 18 Control Center widgets, and full English & Romanian support.