{"product_id":"waveshare-4-2-nfc-e-paper","title":"Waveshare 4.2\" NFC-Powered e-Paper — 400×300, No Battery, Updated from Your Phone","description":"\u003cp\u003e\u003cstrong\u003eOrder-to-ship:\u003c\/strong\u003e ordered from our distributor when you place your order and shipped to you from Kalmar, Sweden.\u003c\/p\u003e\u003cp\u003eThe Waveshare 4.2\" NFC-Powered e-Paper is a 400×300 black-and-white e-paper display with no battery and no wired connection; it is powered and updated entirely over NFC. Images are written from an NFC-enabled smartphone using Waveshare's app or from an NFC reader such as the ST25R3911B board, and the display keeps the image with zero power once written. Use it as a shelf label, a door sign, a name badge or a picture frame that never needs charging.\u003c\/p\u003e\u003ch3\u003eHighlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e4.2\" e-paper, 400×300, black\/white, 170° viewing angle\u003c\/li\u003e\n\u003cli\u003eNo battery, no cable – power and data over NFC\u003c\/li\u003e\n\u003cli\u003eUpdate from Android (Huawei, Honor, Vivo, Xiaomi, Redmi, OPPO tested) or iPhone via Waveshare's app, or from an NFC reader\u003c\/li\u003e\n\u003cli\u003eImage stays without power\u003c\/li\u003e\n\u003cli\u003eOutline 105.1 × 94.1 × 9.9 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNote\u003c\/h3\u003e\u003cp\u003eSamsung and Google phones are not supported by Waveshare's app.\u003c\/p\u003e\u003ch3\u003eIn the box\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 × 4.2\" NFC-Powered e-Paper\u003c\/li\u003e\n\u003cli\u003e2 × double-sided foam tape\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDocumentation: \u003ca href=\"https:\/\/www.waveshare.com\/wiki\/4.2inch_NFC-Powered_e-Paper\" target=\"_blank\" rel=\"noopener\"\u003eWaveshare wiki\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eManufacturer: Waveshare, Shenzhen. Importer: Gadwave, Kalmar, Sweden.\u003c\/p\u003e","brand":"Waveshare","offers":[{"title":"Default Title","offer_id":55502422933831,"sku":"WSH-17341","price":989.0,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/4535\/2519\/files\/4.2inch-nfc-powered-e-paper-1_4.jpg?v=1792533199","url":"https:\/\/gadwave.com\/products\/waveshare-4-2-nfc-e-paper","provider":"Gadwave","version":"1.0","type":"link"}