How accurate is the forearm compass arrow?

The paired phone's magnetometer and gyro feed the BLE controller; the sleeve repaints an 8×8 arrow to the nearest 22.5°. Hold Pad 1 once at the start of a walk to re-calibrate against north for the tightest bearing.

Does the arrow point the short straight-line way or the actual walking route?

It points the straight-line bearing and straight-line distance, so you always know which way your hotel is. For turn-by-turn route detail, the paired phone still handles the walking directions while the sleeve keeps the compass visible.

Can I save more than three landmarks?

The shipped version-1 profile holds up to six saved landmarks; edit the landmarks array in the Sleeve Studio app, then send the mode to the sleeve over Bluetooth in about 30 seconds.

Use Case #19 · Cluster C · Commute, Transit & Urban Navigation · All 50 Modes

Walking Landmark Compass Arrow That Points to Your Hotel

A dynamic 8×8 pixel arrow rotates on the 8×32 RGB LED matrix toward your pinned destination while a straight-line readout scrolls HOTEL 0.4 MI, so you walk without staring at a phone. Five conductive-fabric pads rotate and set the pin — $199 finished sleeve.

Head up, feet moving: An 8×8 pixel arrow rotates toward your pinned destination with a straight-line distance readout (HOTEL 0.4 MI).
Both hands on luggage: 5 sewn fabric pads set a new pin or cycle saved landmarks with a tap of your opposite thumb.
Pre-loaded & customizable: Ships as one of 50 built-in modes; save your hotel, venue, and station in the Sleeve Studio app.

Preorder Sleeve · $199 Free US Shipping Try in Sleeve Studio →

▶ See the 8×32 Forearm Display in Action

Watch the 8×32 RGB LED matrix and 5 conductive-fabric touch pads running cycling, running, navigation and commute modes on the forearm sleeve. Concept render · simulated 8×32 display · first production run of 500 units.

Why Phone Maps and Watch Compasses Fail While Walking

Stop walking into lamp posts: The arrow lives on your forearm, so your eyes stay on the street ahead instead of a phone in your hand.
No laggy dial: The arrow repaints every time you turn, instead of a watch compass that has to settle before it’s useful.
Know the way and the distance: HOTEL 0.4 MI stays legible on your arm without unlocking anything or stopping in a crowd.

What Each Forearm Pad Does (Pads 1–5)

Pad 1 (Elbow)Press & hold — Calibrate compass to current heading · LED cue: 8×8 arrow spins once to north; "CALIBRATED" scrolls

Pad 2 (Upper Mid)Swipe — Cycle saved landmark (hotel → venue → station) · LED cue: Label scrolls; accent cyan → amber → magenta

Pad 3 (Center)Double tap — Pin current position as the destination · LED cue: Arrow locks; "HOTEL 0.4 MI" scrolls in one pass

Pad 4 (Lower Mid)Single tap — Toggle arrow ↔ distance only · LED cue: Row 4 renders just the MI readout

Pad 5 (Wrist)Press & hold — Flip north-up ↔ head-up · LED cue: Arrow orientation flips with a 200 ms fade

Customize in 30 seconds: Pick this mode in the Sleeve Studio app, type or speak new words, colors, or pad actions, and tap Send over Bluetooth — no code.

Frequently Asked Questions

How accurate is the forearm compass arrow?: The paired phone's magnetometer and gyro feed the BLE controller; the sleeve repaints an 8×8 arrow to the nearest 22.5°. Hold Pad 1 once at the start of a walk to re-calibrate against north for the tightest bearing.
Does the arrow point the short straight-line way or the actual walking route?: It points the straight-line bearing and straight-line distance, so you always know which way your hotel is. For turn-by-turn route detail, the paired phone still handles the walking directions while the sleeve keeps the compass visible.
Can I save more than three landmarks?: The shipped version-1 profile holds up to six saved landmarks; edit the landmarks array in the Sleeve Studio app, then send the mode to the sleeve over Bluetooth in about 30 seconds.

Run This Mode on Your Forearm — Reserve Batch 01 ($199)

Complete hardware + 50 modes ($199): 8×32 RGB LED matrix (256 pixels), 5 sewn conductive-fabric touch pads, and a 5-second slide-out washable electronics pod.
Sleeve Studio app ships first: Personalize all 50 modes in plain words before your sleeve arrives (small monthly subscription; zero code).
Zero-risk preorder: First run of 500 units (~30 days to production), free US shipping, 100% refund anytime before shipping + 90-day money-back guarantee.

Preorder Sleeve · $199 Free US Shipping Open Sleeve Studio Full Hardware Specs

Watch → Prove → Buy

Not ready to order yet? Take the next step.

See the hardware in motion, read the peer-reviewed textile research behind it, or reserve your spot in the first production run of 500 sleeves.

STEP 1Watch the sleeve in action Five soft touch pads, an 8×32 RGB LED display, Bluetooth, and a removable electronics pod for gentle washing. See the hardware → STEP 2See how the app customizes any mode Pick from 50 pre-built modes or type a new one in plain words. The Sleeve Studio app ships before your hardware. See Sleeve Studio → STEP 3Preorder the Sleeve — $199 First run of 500. ~30 days to production. Free US shipping. Full refund anytime before it ships. Order now →

90-day money-back guarantee, plus a full refund any time before the sleeve ships.

Questions about your setup? Call +1 725-338-4835 or email alex@midnightdev.dev.