1.54 Inch NFC E-Ink Screen Keychain, No Battery

You tap an NFC phone to the little screen, lift it away, and a red, yellow, black and white image sits there on the e-ink panel with the power off.

The screen is 1.54 inches across, framed in white with a brushed aluminum edge, small enough to ride on a keyring beside your keys. There is no cable to hunt for and no battery to charge. The picture you send over NFC stays on the display after you walk away, because e-ink holds an image without drawing power.

Up close the panel shows red, yellow, black and white together, so a logo, a pet portrait or a name card reads in real color rather than plain gray. A metal loop sits at one corner for the included keychain attachment, and the back is a clean white shell with the same silver rim running around the body.

Key Benefits

• No battery, no cable The screen pulls its power from the NFC field of your phone, so there is nothing to charge and nothing to plug in.
• Image stays on with power off E-ink keeps the last picture on the panel, so your logo or photo is visible even while the tag sits idle in a bag or drawer.
• Four color display Red, yellow, black and white render together, giving more life to a logo, artwork or name than a single color e-ink tag.
• Wireless NFC update Change the picture by holding an NFC phone to the screen and sending a new image through the app, with no cable or dock in the way.
• Keychain ready The corner loop and included attachment let it clip to keys, a bag zip or a lanyard.

Best for: makers, small shops and gift buyers who want a tiny reusable display for a logo, a pet photo, a name badge or a promo image that can be swapped again and again.

Why It Works

E-ink only spends energy at the moment the picture changes, and NFC supplies that brief burst of power straight from the phone. Between updates the panel sits at zero draw, which is why the screen can live on a keyring for months and still show the last image you sent.

Quick Product Facts: Screen: 1.54 inch e-ink panel; Colors: red, yellow, black, white; Power: NFC passive, no battery; Update: wireless over NFC; Form: keychain with metal loop; In the box: e-ink screen unit and keychain attachment.

How It Fits Your Routine

Clip it to your keys with your own portrait or initials, then change the image whenever the mood shifts. A tap from your phone is all it takes to load something new.

At a market stall or a pop-up, load your shop logo in the morning and let the tag sit on the counter as a small color sign. When a promotion changes, send a new graphic and the same unit shows the new message.

Because there is no battery to drain, you can drop it in a drawer between events and it wakes up showing exactly the picture you left on it.

FAQ

Does it need charging? No. The screen is passive and takes its power from the NFC signal of your phone during each update, so there is no battery and no charging port.

How do I change the picture? Hold an NFC phone to the screen and send the new image through the matching app. The panel refreshes in a few seconds.

Does the image disappear when idle? No. E-ink holds the last picture with the power off, so the display stays readable until you send a new one.

What size is the screen? The e-ink panel measures 1.54 inches, about 3.9 cm, on a compact keychain body.