1.8M+ 
4.8★ 
300M+ 
91M+ 
Outdoor play
Why kids need to spend time outdoors
What changed between streetlight curfews and today’s schedules — and how to rebuild unstructured outdoor time.
Unapproved calls blocked from JrTrack watches every month.
Kids Smart Watch · Ages 6–12
GPS, Calling & Zero Distractions
JrTrack 5 SE is a standalone 4G watch with its own number — real-time location, approved-contact calling and texting, and no social media or internet.
- 4.73★ from 571 reviews
- Works without a phone
- 24+ hour battery
School-Fi · Campus Focus
Focus at School, Connected After
School-Fi uses geo-location to quiet the watch the moment your child steps on campus — then brings connection back at pickup.
- Automatic, no daily setup
- Teacher-friendly
- SOS always available
Parent Controls · Mission Control
You Approve Every Contact
Only the people you add can call or message. Everything else is blocked — about 1.8 million unwanted calls stopped every month.
- No app store, no browser
- SafeZone alerts
- Location history
Reviewed & recommended by 
Flagship kids smart watch 
4.73 average from 571 verified reviews 
Meet JrTrack 5 SE — the essentials, nothing else
4.73 average from 571 verified reviews JrTrack 5 SE carries its own SIM and phone number, so it works the moment it leaves the box — no paired phone required. Calls, texts, photos, video messages, GPS check-ins and SOS live on the wrist; social feeds, app stores and web browsers simply do not exist on the device.
Field-tested by real families: Cosmo households log more than 300 million messages and 91 million shared moments, which is how features like group messaging, SafeZones and School-Fi were prioritised in the first place.
See full JrTrack 5 SE specs
Back to school
School-Fi™ makes the classroom distraction-free automatically
School-Fi is a geo-location layer that recognises the campus boundary. Notifications, games and non-essential features go quiet on arrival and return at dismissal — no daily toggling, no teacher confiscation drama, and SOS stays live the whole time.
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Quiet by location, not by memory
The watch knows where school is, so focus starts and ends on its own.
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Still connected for emergencies
Parents keep location visibility and children keep one-touch SOS access.
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Built for school policies
Helps families comply with no-phone rules while keeping the walk home covered.
Evidence, not adjectives
What the Cosmo network shows every month
These numbers come from live JrTrack devices and our parent app — the same data our product and trust & safety teams review.
Google rating across hundreds of independent customer reviews.
Messages exchanged inside approved family circles.
Photos, videos and voice moments shared with JrTrack.
Mission Control app
The parent controls that actually matter
Everything is configured from one dashboard on your own phone: who can reach your child, where they are, when the watch is allowed to buzz, and what happens in an emergency.
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Live GPS & SafeZones
Real-time location, history and arrival/departure alerts for home, school and practice.
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Focus Mode schedules
Silence non-essential features during class, homework or bedtime.
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Approved contacts only
Add grandparents, a coach or a carpool parent — and remove anyone in seconds.
Buyer reference
JrTrack 5 SE at a glance
A quick technical summary for parents, schools and retail partners comparing kids smart watches.
| Category | What you get | Why it matters |
|---|---|---|
| Network | Standalone 4G LTE with its own SIM and phone number | Works on the walk home even when no phone is nearby |
| Location | GPS tracking, location history, SafeZone geofence alerts | Answers “where are they right now?” in seconds |
| Communication | Voice calling plus text, photo, video and audio messaging, including group chats | Real family texting instead of a limited app-only inbox |
| Safety | SOS mode, optional emergency calling, approved-contact firewall | Children can always reach help; strangers cannot reach them |
| Content policy | No social media, no web browser, no app store, no ads | Removes the distraction and exposure risks of a first smartphone |
| Wellness & utility | Step/activity tracking, alarms, reminders, custom wallpapers and ringtones | Builds routines and ownership without screen-time spirals |
| Battery | 24+ hours of typical mixed use | Covers a full school day plus after-school activities |
| Accessories | Swappable bands, screen protector, charging cable, Launchpad stand | Extends the life of the watch through real childhood wear and tear |
Need configuration help before deployment? Our team publishes step-by-step JrTrack user guides and activation instructions on the activation page.
Made for real life
Built for drop-off lines, practices and first bike rides
Independence arrives in small steps — walking to a friend’s house, staying late at practice, riding to the park. JrTrack covers those steps with the fewest possible features and the highest possible reliability.
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Calling & messaging
The right people are one tap away — no open group chats, no unknown numbers.
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Photos & video messages
Kids capture the goal, the field trip and the lost tooth — shared only with family.
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Activity tracking
Steps and movement goals that reward being outside instead of scrolling.
Why families choose Cosmo
These are the days they’ll remember
Independence
Confidence for growing up — one supervised step at a time.
Healthy habits
Movement goals that keep kids active and motivated all week.
Connection
They learn the value of checking in with the people who matter.
Safety
One touch to reach you, and one place to see where they are.
About Cosmo Technologies
A Denver team of parents, engineers and educators
Cosmo was founded in 2020 by CEO Russell York with one goal: build connected devices that protect childhood instead of shortening it. Every feature ships only after it passes a simple test — does it help a family stay in touch without pulling a child into an endless feed?
Today JrTrack is one of the best-selling standalone 4G kids smart watches in the United States, supported by a US-based team, published user guides and a documented privacy policy.
Cosmo insights
Guidance from our family research library
GPS tracking
4 practical ways to track your child’s location
Phones, tags, apps and standalone GPS watches compared on accuracy, battery and child independence.
Child safety
6 tips to keep your kids safe this year
From stranger safety scripts to cyberbullying signals — an updated checklist for modern risks.
Social skills
Teaching kids to work through everyday conflicts
Simple language and routines that help children negotiate, apologise and repair friendships.
Screen time
Average screen time for teenagers
Current benchmarks, what counts as “too much”, and balanced alternatives for younger siblings.
First device
Top smartphone alternatives for kids
Watches, basic phones and hybrid devices ranked by control, connectivity and long-term cost.
Ready when they are
Explore more with the bestselling kids smart watch
Set up approved contacts, SafeZones and School-Fi in minutes — then let childhood happen outside.
Frequently asked
Answers before you commit
Still deciding? Our full knowledge base lives on the FAQ page.
JrTrack 5 SE is a standalone device: it has its own SIM card and phone number, so it does not need to be tethered to a smartphone. It handles calling, messaging, GPS location, SOS alerts, activity tracking and reminders, and it is firewalled against social media and internet browsing. Parents manage approved contacts, location, SafeZones and Focus Mode from the companion app on their own phone.
- Real-time GPS tracking, location history and SafeZone alerts
- Approved-contact voice calling and family-safe messaging (text, photo, video, audio)
- Group messaging limited to approved contacts
- SOS mode and optional emergency calling
- Focus Mode and School-Fi campus quiet hours
- Activity tracking, alarms, reminders, custom wallpapers and ringtones
- 24+ hours of typical battery life
For roughly ages 6–12, the safest starting point is a standalone 4G watch with parent-approved contacts and no browser or app store. JrTrack 5 SE was designed for that stage specifically: true texting with media, layered safety technology, and no pathway to social platforms. If your child is older and needs email or schoolwork apps, a managed phone may be a better fit — we would rather tell you that than sell the wrong device.
No. The watch runs on its own 4G LTE connection, so it stays reachable on the walk to school, at practice or at a friend’s house. Parents install the companion app on their own phone purely to manage settings and view location.
Only contacts a parent explicitly approves can call or message the watch — everything else is rejected before it reaches your child. Across the Cosmo network that amounts to roughly 1.8 million blocked calls each month. You can review and remove any contact at any time from the app.
Activation is a guided flow documented on the activation page, with device-by-device instructions in the JrTrack user guides. Our US-based team is reachable through the support centre and the contact page.