Logitech Pebble Keys 2 K380s — Tonal Graphite vs ProtoArc XK01 — Black
Do you need a compact keyboard while working, or a full number-pad layout that folds for transport?
Products compared
ASIN B0BT4DP7SC
Logitech Pebble Keys 2 K380s — Tonal Graphite
You want a compact working layout and can do without a numpad.
Last observed offer
$33.99
List Price: $39.99
Size: One Size
Price checked
Observed offer ends
Observed condition: new. Coupon and subscription requirements unverified.
ASIN B09TW35H1Z
ProtoArc XK01 — Black
A built-in numpad is worth the wider opened layout.
Last observed offer
$44.99
- Confirm offer eligibility on Amazon
Price checked
Observed condition: new. Coupon and subscription requirements unverified.
Prices are per listed package. Pickoryx may earn a commission from qualifying purchases through the paid Amazon links on this page, at no added cost to you.
Published by Pickoryx · Published 2026-10-10 · Source checked 2026-10-10 15:10 UTC
The main trade-off
The XK01 packs shorter but opens wider; the K380s trades the numpad for a compact working layout and replaceable cells.
Quick verdict
Choose the Logitech K380s for a narrow work surface and replaceable-battery recovery. Choose the ProtoArc XK01 when you use a numpad often and want a full layout that folds into a shorter package; it needs more width in use and a charging plan.
Choose Logitech Pebble Keys 2 K380s — Tonal Graphite if
- You want a compact working layout and can do without a numpad.
- Spare AAA cells suit your trips, or you need the optional Logi Bolt receiver route.
Choose ProtoArc XK01 — Black if
- A built-in numpad is worth the wider opened layout.
- You prefer recharging and can carry the specified USB-A-to-USB-C cable.
When the recommendation changes
- A computer without usable Bluetooth favors the documented optional Logi Bolt route on the K380s.
- A tightly fitted pouch requires checking the actual keyboard: ProtoArc publishes slightly differing measurements.
The differences that matter
| Decision point | Logitech Pebble Keys 2 K380s — Tonal Graphite | ProtoArc XK01 — Black |
|---|---|---|
| Folding Layout And Working Space | Compact fixed layout without a dedicated numpad; 279 mm wide.[1] | Tri-fold full layout with a numpad. The published long edge is about 386 mm open and 216 mm folded.[3] |
What this changes: Choose the K380s when working width matters more than a numpad. Choose the XK01 for regular number entry and a shorter packed shape, but reserve full-width space after unfolding. Folding saves bag space, not working width.[1, 3] The better fit depends on your priorities | ||
| Connection And Power Recovery | Replace two AAA alkaline cells when depleted. Bluetooth supports three devices; a separately purchased Logi Bolt receiver adds a USB-A receiver connection.[2] | Recharge the built-in cell. ProtoArc specifies its USB-A-to-USB-C cable and recommends a 5V USB source. Three Bluetooth channels are documented; USB-C is described as a charging port.[4, 3] |
What this changes: For a trip, choose between carrying spare AAA cells and carrying the specified charging cable plus a suitable source. On a computer without usable Bluetooth, the K380s has a documented receiver route; do not buy the XK01 assuming its charging cable supplies keyboard input.[2, 4, 3] The better fit depends on your priorities | ||
Best for your routine
Typing on a narrow shared desk
Best fit: Logitech Pebble Keys 2 K380s — Tonal Graphite
Based on listed features, not comparative testing.
The compact layout leaves less keyboard width to accommodate, at the cost of a dedicated numpad.
Travel work with frequent numeric entry
Best fit: ProtoArc XK01 — Black
Based on listed features, not comparative testing.
The numpad stays part of the keyboard when packed; check the opened footprint at your destination.
A computer with unusable Bluetooth but an available USB-A port
Best fit: Logitech Pebble Keys 2 K380s — Tonal Graphite
Based on listed features, not comparative testing.
A separately purchased Logi Bolt receiver provides a documented alternative connection. Pair it using Logitech’s supported setup procedure.
Value and trade-offs
One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.
Pay for the layout and recovery method you will actually use. Include the separate receiver if choosing that Logitech connection route.
There is insufficient verified price history here to make a purchase-timing recommendation.
Limitations
- This is a specification-and-workflow comparison, not a hands-on typing or durability test. Neither has a proven comfort, reliability or real-world endurance advantage here.
- ProtoArc’s product page gives slightly different dimensions across its images and specifications, and describes both standby time and battery life. The rounded lengths above are for rough planning, not a tight-fit guarantee; no runtime comparison is made.
- The XK01’s USB-C charging documentation does not establish wired keyboard input. The Logi Bolt option also does not establish support in every BIOS, console or specialist device.
Questions shoppers ask
Will the same shortcut work on my laptop and tablet?
Not necessarily. Both manufacturers document OS-dependent key actions. The K380s detects the OS over Bluetooth and offers manual selection if needed; the XK01 manual has a separate function table. Check that table for the shortcuts you rely on, rather than assuming pairing guarantees every key action.
Can I pack just my USB-C laptop charger for the XK01?
Do not assume so. ProtoArc’s XK01 FAQ specifically calls for a USB-A-to-USB-C cable and recommends a 5V USB source. Pack the supplied cable and a suitable source; the connector shape alone does not establish compatibility.
Methodology and sources
Compared usable layout, transport shape, connection choices, power recovery and OS-dependent shortcuts for the named models.
AI assisted with source comparison and drafting; Pickoryx did not test these keyboards hands-on.
View 5 sources
- 1.Pebble Keys 2 K380s — Tonal GraphiteLogitech · Official specifications · Source checked 2026-10-10 15:08 UTC
Evidence used on this page
- Specs: dimensions; FAQ: numeric keypad; part 920-011775: Compact keyboard, 279 mm width, no dedicated numeric keypad. Exact Tonal Graphite part.
- 2.Getting Started — Pebble Keys 2 K380sLogitech · Official specifications · Source checked 2026-10-10 15:07 UTC
Evidence used on this page
- Connect your keyboard; optional receiver; OS-adaptive keyboard; Power management: Three device channels, optional separately bought Logi Bolt USB-A receiver, OS mapping, and replacement of two AAA alkaline cells.
- 3.XK01 Foldable Keyboard — BlackProtoArc · Official specifications · Source checked 2026-10-10 15:07 UTC
Evidence used on this page
- Details; Dimensions; Connection Type; Package Contents: Exact XK01: tri-fold full layout and numeric keypad, three Bluetooth channels, rechargeable cell and cable. Dimensions and standby language are qualified separately.
- 4.FAQ — XK01ProtoArc · Official specifications · Source checked 2026-10-10 15:07 UTC
Evidence used on this page
- About XK01 Keyboard Keys; About XK01 Charging: Folding controls power. FAQ specifies USB-A-to-USB-C charging cable and recommends a 5V computer USB source.
- 5.XK01 User ManualProtoArc · Official specifications · Source checked 2026-10-10 15:08 UTC
Evidence used on this page
- Printed English pages 4–5: connection switching, charging and multimedia keys: Bluetooth channel switching, low-charge indication and an OS-dependent shortcut table; Fn+Esc changes the function-key mode.