ARC
A chunky wrist dial for phone control when fingers, weather, speed, or tiny buttons are being unhelpful.
The idea

Phone control, minus the tiny-screen faff.

Arc Band is a wearable control strap built around one big friendly rotating dial. Twist for volume. Press for commands. Hold for the important stuff. No menu diving and no frozen fingertips

The big round boss

A proper physical dial you can find by feel with gloves, low vision, cold hands, or less than perfect movement

Make it do your thing

Map turns, presses, double presses, and holds to volume, splits, navigation nudges, SOS, check-ins, or app shortcuts

Earbuds do the talking

Hear pace notes, split times, confirmations, and app updates without stopping to stare at a glowing rectangle

Built for messy reality

Rain, snow, speed, sleeves, gloves, shaky hands, tired legs. Arc Band starts where normal phone control gets a bit silly

Arc Band wearable dial control on a gloved wrist in winter conditions
Real world control

Big dial. Gloves on. Phone stays put.

A visual pause for the simple point: Arc Band is for the moments when touchscreens stop being helpful and your hands have better things to do.

For when your phone is clever but not convenient

Running, cycling, skiing, work gloves, outdoor kit, accessibility needs. Different worlds. Same problem. The phone can do the job. The screen is often the awkward bit

  • Running get split times and pace nudges while your phone stays tucked away.
  • Cycling tweak audio or trigger a command without doing handlebar origami.
  • Skiing and gloves big dial, thick gloves, tiny amount of drama.
  • Safety set a deliberate hold action for check-ins, alerts, or SOS-style workflows.

Simple hardware with mischievous possibilities

  1. Wear it on your wrist, sleeve, strap, or wherever the kit makes sense.
  2. Pair it with the companion app and choose what the dial controls.
  3. Twist, press, double-press, or hold for the actions you actually use.
  4. Let your phone or earbuds confirm the job is done. Lovely.

Made by Piranha Works

Piranha Works is a UK product studio for practical tech with a bit of bite. Arc Band is exactly our kind of thing: useful, tactile, slightly unusual, and built for people who need control that behaves in the real world.

Companion app

The dial does what you tell it to.

Arc Band is the hardware. The companion app is the mischief panel. Pick what a twist, press, double press, or long hold should do, then let the phone and earbuds handle the confirmation.

TwistVolume, pace nudges, menu movement
PressPlay, pause, split marker, next prompt
HoldCheck-in, SOS-style alert, custom shortcut
Arc Band companion app mockup showing dial action mappings
Set the rules once. Use the dial without looking.
Making the thing

From sketchbook to wrist ready kit

We are shaping Arc Band like a proper product and not a gadget with a strap stapled on. Big dial. Clear feel. Tough use cases. Enough charm to make people want to back it

Hand drawn Arc Band concept sketch board showing dial strap ideas and product notes
Sketching the biteStrap shapes, dial size, tactile grip, and that first little spark of 'yes, this could work'.
Arc Band sketch to prototype board showing development from concept to working wearable
Prototype to KickstarterA visible route from sketch, to working prototype, to a community-backed launch.
Where it bites

Made for awkward moments that actually help

Skier with gloves using Arc Band

Gloves on

Twist for volume. Press for a prompt. Hold for a check in. No frozen screen ballet.

Runner wearing Arc Band

Running brain

Split times, pace nudges, and confirmations in your ears while your legs do the committee work.

Cyclist wearing Arc Band

Eyes up

Phone control that does not ask you to stop watching the road, trail, or traffic.

Hand using Arc Band tactile dial

Find it by feel

A large tactile landmark for low vision, tremor, reduced dexterity, or limited movement.

Skier with gloves using Arc Band

Gloves on

Twist for volume. Press for a prompt. Hold for a check in. No frozen screen ballet.

Runner wearing Arc Band

Running brain

Split times, pace nudges, and confirmations in your ears while your legs do the committee work.

Cyclist wearing Arc Band

Eyes up

Phone control that does not ask you to stop watching the road, trail, or traffic.

Hand using Arc Band tactile dial

Find it by feel

A large tactile landmark for low vision, tremor, reduced dexterity, or limited movement.

Skier with gloves using Arc Band dial controls in cold weather

Gloves on

Twist for volume. Press for a prompt. Hold for a check in. No frozen screen ballet

Runner using Arc Band to hear split times and pacing notes through earbuds

Running brain

Split times pace nudges and confirmations in your ears while your legs do the committee work

Cyclist using Arc Band for phone controls while keeping attention on the route

Eyes up

Phone control that does not ask you to stop watching the road trail or traffic

Accessible Arc Band use case showing large tactile dial for low vision or movement challenges

Find it by feel

A large tactile landmark for low vision tremor reduced dexterity or limited movement

CloseSkier with gloves using Arc Band dial controls in cold weather
Gloves on
CloseRunner using Arc Band to hear split times and pacing notes through earbuds
Running brain
CloseCyclist using Arc Band for phone controls while keeping attention on the route
Eyes up
CloseAccessible Arc Band use case showing large tactile dial for low vision or movement challenges
Find it by feel
Kickstarter
Coming to the crowd

Built in the open with people who get it

Arc Band is made for real world fiddly moments so early feedback matters. The plan is a Kickstarter launch with clear prototype milestones honest updates and a community helping decide which dial actions deserve first dibs

Hear when it launches

Help shape the first bite

Join the early list for prototype notes, testing invites, and the Kickstarter launch signal.
Tell us what you would make the dial do first.
The best ideas will help shape prototype features and tester invites.


Thanks. We will send prototype updates and testing opportunities as Arc Band develops.
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Arc Band Updates
Thanks. We will send Arc Band updates as the product develops.
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