MY PHONE STAYS HOME NOW
Cellular Ultra in the MP-01, phone in a drawer. Calls, maps, Spotify, payments — all there, none of the doomscrolling. The bolted build feels like a tool, not an accessory.
FIG 1.0 — MP-01 / VIEW 01SF-MP-01 / APPLE WATCH ULTRA
MP-01 Ultra Case
Turns the Apple Watch Ultra into the smallest phone you own. Two plates, six bolts, zero distractions.
39,00 €INCL. VAT / EXCL. SHIPPING
COLORWAY — CARBON BLACK
WEIGHT54g
MATERIALPA12-CF Nylon
COMPATApple Watch Ultra 1 / 2 / 3, 49 mm
SKUSF-MP-01-CBN
FREE SHIPPING ABOVE 60,00 € — SHIPS IN 1-2 DAYS FROM GERMANY
5-YEAR STRUCTURAL WARRANTY. 30-DAY FIELD-TEST RETURNS.
System Description
The MP-01 unclips the Apple Watch Ultra from your wrist and rebuilds it as a pocketable mini phone. Two carbon-nylon plates sandwich the watch body and bolt together with six M3 torx screws seated in brass threaded inserts — no snap-fits, no rattle, no chance of walking out of a pocket in pieces. The front plate frames the display flush; digital crown, action button, speakers and microphone stay fully accessible, and the back plate opens over the sensor dome so charging works without disassembly. The G7 revision adds an integrated oval lanyard slot — 4 mm paracord threads straight through, olive loop included. Calls, messages, maps, music, payments — everything the Ultra does, held like a phone, without the feed.
"We don't design accessories. We design instruments. Every tenth of a millimeter matters."
— KLAUS WEBER, LEAD ENGINEER
TECHNICAL SPECIFICATIONS
DATASHEET / SF-MP-01| DIMENSIONS | 107.0 × 51.2 × 16.7 mm |
| BODY THICKNESS | 11.5 mm |
| FRONT PLATE | 5.2 mm |
| WEIGHT (CASE) | 54 g |
| MATERIAL | PA12-CF carbon-fiber nylon |
| FASTENERS | 6 × M3 torx, stainless |
| INSERTS | 6 × brass M3×4×5, Ø3.6 blind |
| LANYARD SLOT | integrated oval, 4 mm cord |
| COMPATIBILITY | Apple Watch Ultra 1 / 2 / 3 |
| CHARGING | open sensor dome, no disassembly |
| TEMP RANGE | −30 … +80 °C |
| TOLERANCE | ±0.1 mm |
OPEN FILES — PRINT IT YOURSELF
REV. R2 — NOT FINAL / CC BY-NC 4.0The MP-01 Ultra Case is an open instrument: the exact CAD we print from is downloadable below, including the threaded-insert drawing with hole positions and depths. Print it, measure it, modify it — or order ours and know precisely what you bolted together. Current revision is a working state; geometry may still move before series production.
RENDERED FROM THE STL YOU DOWNLOAD
Field Reports
RATING 4.7 / 5.0 — 3 LOGSTOLERANCES ARE ABSURD
The watch drops in with zero play and the plates close on it like a mold. Brass inserts mean I have had it apart five times with no wear. Charging through the back opening just works.
POCKET-PROOF
Two months in a climbing pack and a jeans pocket. Corners scuffed slightly, glass untouched, bolts still torqued. Wish the lanyard came in the box.
Questions, Answered.
01 How fast do you ship?
Parcels are dispatched from Germany within 1–2 days of your order. Standard delivery takes 5–7 days, express 2–3 days — worldwide.
02 Do you ship worldwide?
Yes. Everything is designed and printed in Germany and shipped wherever you are. Shipping is free above €60.
03 What material are the cases printed from?
Carbon-fiber-reinforced PA12 nylon (PA12-CF): stiff, light and temperature-stable from −30 °C to +80 °C. Every batch is dimension-checked against CAD to ±0.1 mm.
04 Are the STL files really free?
Yes. The exact CAD we print from is downloadable on every product page under CC BY-NC 4.0, including the threaded-insert drawings. Print it, measure it, modify it — or order ours and know precisely what you bolted together.
05 Does a bolted case affect charging, signal or buttons?
No. The openings are designed in: the MP-01 charges on any Watch charger without disassembly, the AT-02 leaves the AirTag dome exposed for signal and speaker, and the CP-03 keeps the Epix display and side buttons fully reachable.
06 Is the paracord loop included?
Yes. An olive 4 mm paracord loop ships in the box with every case — thread it through the integrated lanyard slot, no adapter needed.
07 Can I return a case?
Yes — 30-day field-test returns and a 5-year structural warranty. And if a tolerance, a chamfer or a whole idea could be better, tell me: feedback is always welcome.