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Kam Union Dot-Matrix Water Drop Smart Ring

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Kam Union Dot-Matrix Water Drop Smart Ring

Kam Union Smart Devices

Kam Union Dot-Matrix Water Drop Smart Ring

Product Code: SD-3894

Tap the side button for the time. Keep your phone in your pocket.

When a call comes in, the caller's number scrolls across this 8 mm stainless steel ring, which also shows the time, steps, heart rate, blood oxygen, and sleep on a blue LED dot-matrix display at the press of a button.

Sections

Smart Wearable Devices

Categories

Smart Devices

Condition

New

Origin

China

Seller Type

Certified Professional Seller

CE & ISO Certified

Global Shipping

Supplier: Medigear

Kam Union builds the KU-SH-05-003 as a display smart ring for gyms and retailers. An 8 mm band of stainless steel and silicone carries a blue LED dot-matrix screen that shows the time, steps, heart rate, SpO2, and sleep, and scrolls an incoming caller's number or English name. The ring monitors heart rate, SpO2, sleep, and stress; adds HRV and female cycle tracking; and logs steps, distance, and calories. Taps and a side button run a tally counter and a stopwatch, and gestures fire the phone camera or swipe TikTok videos. It is rated IP68 and comes in glossy black, gold or silver. Caller names in non-Latin scripts show only as "incoming call".

The display changes the daily routine. A double touch brings up steps, and further touches cycle through heart rate, SpO2, sleep, and battery level, so a reading or a caller's number is visible without unlocking the phone. On a gym floor or in a meeting, the phone stays put while the wearer checks the time or the caller. The screen stays dark until the side button wakes it, so a glance alone shows nothing.

Charging runs on a round base with a cable, and the clamshell case is an extra. Family care lets relatives run a remote health check through the app, and the inner band carries FCC, CE and RoHS markings in the product photographs. The size graphic shows six sizes but labels seven, from 6 to 12, so the quotation lists the size range, along with battery life and the app's name.

The band is 8 mm wide across every size. It is available to buyers in more than 80 countries through Medigear.uk, and the enquiry team sets out stock and lead time.

The KU-SH-05-003 earns its place for people who want information on their finger without handling a phone. Gyms and fitness studios can use the counter and stopwatch for sets and intervals, retailers can stock it for customers who want a visible display ring, and workplace wellbeing schemes can offer it to staff who opt in. Counter rings also sell to buyers who count repetitions by hand, including prayer counts, and the caller display suits front-of-house roles where phones stay out of sight.

Evidence for its readings runs both ways. A review of studies comparing optical pulse variability with ECG found agreement adequate at rest, which supports the HRV and stress figures taken in calm conditions, but physical activity and some mental stressors impaired that agreement. Cycle tracking has weaker support: a study of ten period tracker apps found conflicting predictions for period dates, ovulation and the fertile window. The manufacturer's own test data for the ring, shared by the enquiry team, shows how this model performs.

It is the wrong purchase for remote patient monitoring, contraception or fertility planning, and oxygen checks in lung disease. Buyers whose staff save contacts in non-Latin scripts should also know that those callers appear only as "incoming call", and wearers who want a screen that is always visible should note that the display wakes on demand.

Gyms, retailers and employers buying through procurement routes will ask for the declaration of conformity, the app's data terms, battery shipping documents and the size chart before approval. The manufacturer issues the conformity documentation those procurement routes require, and the enquiry team shares it.

Readings without reaching for the phone

Time, steps, heart rate, SpO2, and sleep all appear on the ring itself. The phone stays in a bag or locker, which suits gym floors, meetings and any setting where pulling it out is frowned upon.

Caller ID on the finger

An incoming caller's number, or an English name, scrolls across the display. The wearer can decide whether to answer a call without taking the phone out.

A tally counter on the side button

Counting mode turns the side button into a clicker that keeps its total on screen. Trainers counting sets, staff counting stock, and anyone counting repetitions get one less thing to carry.

A stopwatch for sets and intervals

The timing function starts, pauses and stops from the ring, and the screen switches off while it runs. You can time rest periods between sets with the phone left in a bag.

Spot checks on demand

Three touches start a heart rate test, and four start an SpO2 test, with the result shown on the ring. A quick check before or after a session needs no app.

Gestures for the camera and short videos

Gestures fire the paired phone's camera shutter and swipe through TikTok videos. Group photos and hands-free scrolling work from the finger.

Finishes that read as jewellery

Glossy black, gold and silver finishes give the ring a polished look when the display is dark. It suits wearers who want a tracker that looks like a statement ring.

Cycle, stress and HRV in one place

Female cycle tracking sits alongside stress and HRV in the app. Wearers who track these together get one record, with the cycle data handled as sensitive health information.

Family care check-ins

Relatives can run a remote health check through the app with the wearer's agreement. That suits families who want to keep a light eye on an older parent's routine.

Blue LED dot-matrix display

The display is a strip of blue LEDs arranged as a dot matrix, which the catalogue calls a water-drop design. It shows numbers and short words such as HR, SpO2, and SLEEP.

8 mm stainless steel and silicone band

The band is 8 mm wide and combines stainless steel with silicone. The steel grade is specified in the quotation, which matters for wearers with metal sensitivity.

Tap and side-button controls

Long presses, double touches and counted touches move between functions, and the side button wakes the screen. The control map is printed in the catalogue, so staff can learn it before rings are issued.

Heart rate and SpO2

The ring monitors heart rate and SpO2 and can test them on demand. Treat both as wellbeing readings, never as a basis for clinical decisions.

Sleep summary on the ring

Five touches show last night's sleep duration on the display. Fuller sleep detail sits in the app.

Stress and HRV

Stress monitoring and HRV tracking appear in the specifications. They are steadiest when the wearer is at rest.

Female cycle tracking

Cycle tracking appears under the specification's additional tracking. It suits logging and pattern-spotting, and its predictions should not guide contraception or conception.

Steps, distance and calories

A built-in accelerometer counts steps and recognises activity such as running and cycling, with distance and calories in the app. Calorie totals from wrist and finger wearables are estimates.

Caller ID

With call reminders on, phone numbers and English names scroll across the screen, and names in other scripts show as "incoming call".

Counting mode

A long press on the time screen starts the counter; short presses add one, and a second long press exits. The count stays visible as it builds.

Stopwatch

A long press on the step screen opens the timer, short presses start and pause it, and a long press exits. The screen turns off within 2 seconds while timing runs.

Gestures

Gestures act as a camera shutter and a TikTok swipe on the paired phone. Which phones support them is set out in the app documentation.

Family care

Family members can run a remote health check through the app. Because it exposes health data, sharing requires the wearer's clear agreement.

IP68 rating

The ring is rated IP68, which, under IEC 60529, depends on the test conditions the manufacturer sets. The catalogue mentions swimming and showering, and the care guidance sets the limits.

Charging base and optional case

The catalogue shows a round charging base with a cable, and a black clamshell charging case as optional. The quotation includes battery life and charging time.

Finishes and markings

The ring comes in glossy black, gold or silver. Product photographs show FCC, CE, and RoHS markings, plus a size numeral on the inner band.

The KU-SH-05-003 suits gyms, fitness studios, retailers and voluntary workplace schemes that want readings, caller ID and a tally counter on the finger, so the phone can stay put. It suits buyers who treat its heart rate, SpO2, stress and sleep figures as wellbeing trends and its cycle predictions as a diary. It does not suit remote patient monitoring, contraception or fertility planning, or staff whose contacts are saved in non-Latin scripts and who rely on caller names. Three answers decide the order: battery life between charges, the app's name and data terms, and the final size list with inner diameters. Medigear.uk lists the KU-SH-05-003 for business buyers worldwide and can arrange delivery, installation, commissioning, familiarisation and service cover. Ask the enquiry team for the declaration of conformity, the manufacturer's size chart and the care guidance for water use before ordering.

FAQ

Frequently Asked Questions

Everything buyers need to know about sourcing medical equipment through MediGear.

The blue LED dot-matrix strip shows the time and date, steps, heart rate, SpO2, last night's sleep, battery level, a tally counter and a stopwatch. The specification wakes it with a long press of the side button, while the feature pages are accessed by tapping. After that, a double tap shows steps, and three, four, five and six taps open heart rate, SpO2, sleep and battery level.

With call reminders switched on in the app, the ring scrolls the caller's phone number, or the name when it is saved in English. Names written in Chinese or other scripts appear only as "incoming call", which matters for buyers whose contacts are saved in Arabic, Cyrillic or other non-Latin scripts.

On the time screen, a long press starts counting mode, short presses add to the count and a second long press exits. It suits anything counted by hand, from exercise repetitions and stock checks to prayer counts.

The catalogue presents health management and a remote health check for family members without making a medical claim. MHRA ties medical device status to the purpose a manufacturer states, so the ring sits outside UK MDR 2002 as a wellness wearable. Remote patient monitoring, oxygen checks in lung disease and contraception or fertility decisions need purpose-built medical products, which this ring is not.

Cycle tracking suits logging periods and spotting patterns over months. A study of ten period tracker apps found they gave conflicting predictions for period dates, ovulation and the fertile window, so the ring's cycle predictions should not guide contraception or conception.

Stress scores on wearables rest on beat-to-beat variation in the optical pulse signal. A review of studies comparing that signal with ECG found agreement adequate at rest but impaired by physical activity and some mental stressors, so compare readings taken while still and calm over time.

The catalogue describes worry-free wear during exercise, swimming and showering, backed by an IP68 rating. Under IEC 60529, IP68 covers immersion to a depth and for a time the manufacturer sets, while hot water, soap and chlorine are separate matters, so the manufacturer's care guidance from the enquiry team sets the limits.

Battery life and charging time are set out in the manufacturer's specification, which the enquiry team shares with the quotation. A lit display draws more power than sensing alone, so how often the screen is woken changes the interval between charges. Battery level appears on the ring after six touches.

The enquiry team shares the app's name, supported phones and data terms with the quotation. Heart rate, SpO2, sleep, stress and cycle records are special category health data under UK GDPR and the EU GDPR, and cycle data is especially sensitive. Establish where the app stores readings, and whom the family care feature lets see them, before rings are issued to staff or members.

The size graphic labels sizes 6 to 12, seven in all, although its heading says six. The band is 8 mm wide in glossy black, gold, or silver, and the inner diameter for each size is provided with the manufacturer's size chart from the enquiry team.

The enquiry team sets out the warranty terms in its quotation. Those terms are worth reading for the display and side button, which are handled many times a day.

The product photographs show FCC, CE and RoHS markings on the inner band, which is manufacturer positioning, and the declaration of conformity sets out the standards behind them. In Great Britain, a phone-linked wearable falls under the Radio Equipment Regulations 2017 and the RoHS Regulations 2012, both of which recognise CE marking alongside UKCA, while the WEEE Regulations 2013 cover disposal. Conformity requirements differ by destination market, and the enquiry team shares the manufacturer's documentation for the country the unit is going to.