Built for five days you cannot pause.
There is no charging routine during Hajj that a group of forty people will reliably follow, so the band has to outlast the whole rite on one charge. Everything else in the specification follows from that, and from the heat.
- Battery
- 10d
- A full Hajj on one charge
- Sealed
- IP68
- Wudu, rain, sweat, Zamzam
- Rated to
- 50°C
- Operates through Saudi summer
- Phones needed
- 0
- Its own SIM, its own battery
On for the whole pilgrimage. Off whenever they want.
Fitted at the origin airport, before the group flies. Three adult sizes with adjustment in each, so nothing is cut or shaped to the individual, which is what keeps the strap on the right side of the ihram restriction.
It comes off with a clasp whenever the wearer wants. Removal outside a charging window raises a quiet notice to the group leader, never an emergency. A safety device somebody cannot take off is a restraint, and that is a different product with different ethics.
Illustration. Prototype hardware; final industrial design may differ.
Four vibrations. Learnable in ninety seconds, in no language.
Everything the band says back to the wearer is haptic. The patterns are deliberately few and deliberately distinct, and they are taught once at fitting while the group is still in one room at the origin airport.
Two short pulses
Your alert went out.
One long, repeating
Someone has acknowledged and is coming.
Three sharp pulses
Stay where you are. Someone is walking to you.
One soft pulse
You are getting too hot. Find shade.
What the band is actually doing while it sits there.
A guide that knows where you are standing
The band resolves your position to the place you are in, and speaks: the rite performed here, or the history of the ground you are on.
Most pilgrims perform Hajj once, briefed by a booklet read on the plane. The band closes that gap at the moment it opens. Approach the mataf and it tells you how tawaf is performed; stand at Muzdalifah and it tells you what this night is; pause at the foot of Jabal an-Nur (where nothing at all is required of you) and it tells you that near the summit is the cave where revelation began. Spoken in your language through a bone-conduction earpiece, triggered by where you are, with nothing to read and nothing to operate. It is an informational guide, not a religious authority: on any question of validity it tells you to ask your group's scholar, by name.
Live location, continuously
Where your pilgrim is, right now, on a map, shared with named family and with their registered group leader.
The band reports its own position on its own cellular connection. There is no phone in the chain, so a flat battery, a phone left in the hotel safe, or a handset the wearer cannot operate does not create a gap. During the days when the networks around the Haram and the camps are saturated, positions are buffered on the device and uploaded the moment there is capacity, so the trail is complete even where the live view was not.
One press. Nothing to read.
A physical button on the band. No screen to unlock, no app to find, no language to understand.
This is the capability the whole product exists for. A large share of pilgrims are elderly, are abroad for the first time, and do not read Arabic or English. Every phone-based safety tool assumes the person in trouble can unlock a device, find an icon, and read a confirmation. Under heat stress, in a crowd, at night, that assumption fails. Press and hold the button for three seconds; the band vibrates twice to confirm the alert has gone out, and keeps vibrating on acknowledgement so the wearer knows someone is coming.
Heat exposure alerts
Skin temperature and exertion, watched continuously, with an escalation before collapse rather than after it.
Heat illness is the single largest cause of pilgrim casualties, and it is a condition with a long warning window that nobody is watching. The band tracks skin temperature alongside movement and pulse, and raises a graded warning (first to the wearer as a vibration, then to the group leader, then to family) when the pattern matches early heat strain. The point is to move someone into shade and fluid while they can still walk there.
Fall detection with escalation
A hard fall raises an alert automatically. Silence is treated as the emergency it usually is.
If the band detects a fall it prompts the wearer to cancel. No cancellation within thirty seconds escalates the same way a pressed SOS would, with the last known position attached. A fall in a stairwell, at the Jamarat, or in a hotel bathroom stops being something discovered hours later.
Group perimeter alerts
The group leader knows the moment somebody leaves the camp, the hotel, or the procession.
A leader draws a perimeter around the Mina camp, the hotel in Aziziyah, or the route to the Haram. Anyone crossing it raises a named alert on the console. Most separations are recoverable if you know within two minutes; they become searches when you find out at the evening headcount.
Reunite mode
When a pilgrim is separated, the band guides the person walking toward them.
Once a separation is confirmed, whoever is closest gets a bearing and distance that update as they move, instead of a static pin they must interpret against an unfamiliar street layout. The wearer's band vibrates in a distinct pattern so they know to stay where they are, which is the single hardest thing to communicate to a frightened person who does not share your language.
The full sheet.
These are design targets for prototype hardware, not measured results from a production run. They may change before manufacture, and where they do we will say so rather than quietly editing the page.
Connectivity
- Cellular
- LTE-M / NB-IoT with 2G fallback, multi-band for Saudi networks
- SIM
- Embedded eSIM, pre-provisioned. Nothing to insert, activate or top up.
- Positioning
- GNSS (GPS, Galileo, BeiDou) with cellular and Wi-Fi assist
- Offline behaviour
- On-device buffering of up to 72 hours of position history
Power
- Battery life
- Target 10 days in pilgrimage mode; 30 days standby
- Charging
- Magnetic contact pad. No exposed port to seal or corrode.
- Low battery
- Group leader is warned at 20%, family at 10%
Sensing
- Heat strain
- Skin temperature, ambient temperature, pulse and motion
- Fall detection
- 3-axis accelerometer and gyroscope, 30-second cancel window
- Wear detection
- Alerts if the band is removed outside a registered charging window
Physical
- Sealing
- IP68: submersible to 1.5 m for 30 minutes
- Operating range
- -10°C to 50°C
- Weight
- Target 28 g including strap
- Strap
- Ihram-safe: unstitched, unknotted, single-piece silicone with a smooth clasp
- Sizes
- Adult S / M / L, adjustable within each
Controls
- SOS
- Recessed physical button, 3-second hold, double-vibration confirmation
- Safety feedback
- Haptic only. Every safety function works with no screen, no audio and nothing to read.
- Guide audio
- Spoken through a paired bone-conduction earpiece, in the wearer's language. Optional: the guide is a layer on top of the safety core, and the band is fully functional without the earpiece.
- Language
- The band itself is language-free; the guide speaks 12 languages at launch
The guide
- Positioning
- Resolves the wearer's location to the sacred sites: the Haram, the Mas'a, Mina, Arafah, Muzdalifah, the Jamarat, and the sites of Madinah
- At a rite
- Names the rite performed at that place, when it is due, and what it consists of
- Elsewhere
- Tells the history and significance of the place the wearer is standing
- Timing
- Day-aware: on 9 Dhul Hijjah at Arafah it explains wuquf, not sightseeing
- Authority
- Informational only. On any question of validity it directs the wearer to their group's scholar. It issues no rulings.
Designed to be wearable in ihram
The strap is a single unstitched, unknotted piece with a smooth clasp, in the same category as a wristwatch or a medical alert bracelet, items widely held by scholars to be permissible in ihram because they are worn, not sewn to fit the body. We put this in front of you rather than in a footnote because it is the first question every operator asks. We are not a religious authority: we have built the band so that the ruling is straightforward, and we encourage groups to confirm with the scholar they already rely on.
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