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Work · Health wearables

Two screenless health bands

A standard build and a slim build of the same band. Both track heart rate, steps and sleep, run more than 15 days per charge and are rated IP68. Every client’s version is built to its own spec.

Build a band like thisHealth wearable development
Product render of a screenless health band with a fabric-covered sensor module on a khaki woven loop strapProduct render
Product render of the slim screenless health band: a black woven loop strap with a thin graphite module and one buttonProduct render
Product render of the slim band from below: a circular optical heart-rate sensor window and two magnetic charging contactsProduct render

What they are

Wellness bands with no screen. The module sits inside a soft nylon loop, reads heart rate and motion, and buzzes for alerts. The slim build cuts the module to 7.5 mm and 18.5 g, so it is easier to wear to bed. Both use the same chip, sensors and battery, so firmware and app work carry over between them.

Specifications

From the team’s product sheets. The standard build is shown at the top of this page; the slim build is shown above.

SpecStandard buildSlim build
Size43 × 24.5 × 8.7 mm44 × 26.3 × 7.5 mm
Device weight30 g18.5 g
DisplayNoneNone
Main chipPAR2860PAR2860
Memory512 KB ROM, 32 KB RAM512 KB ROM, 32 KB RAM
Heart-rate sensorHX3918H opticalHX3918H optical
Motion sensorSC7A20, step countingSC7A20, step counting
RadioBluetoothBluetooth 5.2
Battery130 mAh lithium polymer130 mAh lithium polymer
Battery lifeMore than 15 days in use, more than 25 days on standbyMore than 15 days in use, more than 25 days on standby
ChargingMagnetic chargerMagnetic charger
Water resistanceIP68IP68
ControlsOne button, vibration motorOne button, vibration motor
StrapNylon loopNylon loop
ColorsBlack, silver, goldBlack, silver, gold
GPSNoNo

What it tracks

  • Heart-rate monitoring
  • Sleep monitoring
  • Step counting
  • Menstrual cycle tracking
  • Notification alerts by vibration
  • Alarms and time sync from the phone

The bands ship with a reference app for iOS 10 and later and Android 5.0 and later, in 43 languages. A client version normally pairs with the client’s own app instead.

General wellness only. These bands are designed for general wellness use and make no diagnostic claims. They are not cleared or approved by FDA as medical devices. FDA’s general wellness guidance describes the policy for low-risk wellness products (as of October 2026). If your product needs medical claims, we plan the regulatory path at Gate 0.

What changes for your version

AreaWhat we change
Strap and finishStrap material, weave and color, module color and finish, and the clasp.
SensorsAdd or swap sensors, such as skin temperature or SpO2, after a Gate 0 check of size, power and accuracy.
FirmwareYour features and data formats, with source in your repository and OTA from the first build.
App and cloudThe band talks to your app through a documented Bluetooth protocol and SDK, or a mini-program. Data goes to your backend.
CertificationFCC and other market approvals planned from Gate 0, before the design is locked.
PackagingYour box, manual, charger and labeling.

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