1.54inch Passive NFC-Powered e-Paper (G), Red / Yellow / Black / White 4-color Displaying, No Battery, Wireless Powering & Data Transfer, Silver Metal Border1.54"Passive NFC-Powerede-PaperRed / Yellow / Black / White 4-color DisplayingRounded metal border, nice looking, stunning qualityWireless NFC-Powered Display RefreshingPassive NFC solution, No Battery Required, No messy wiringHow it worksWireless Powering & Data TransferTo refresh the display content, use a smart phone with NFC function, or an NFC reader, close to the e-Paper, it'll be done in a few seconds* the specific APP or NFC reader is required for refreshing the e-paper screen.A born hanging ornamentFeatures corner hang hole with included lanyard, ideal for handbag decoration, key fob, etc.Application examplesSuitable for smartphone / key fob, contact card QR code, hanging ornament...Rounded metal borderMetal border, stunning quality, more durableSpecificationsPower supplyWirelessGrey scale2Display colorRed / Yellow / Black / WhiteRefresh time15s (data transfer time is not included)Dot pitch0.135 × 0.135Viewing angle>170°Resolution200 × 200Display size27.00 × 27.00 (mm)Outline dimension47.84 × 41.28 (mm)Outline dimensionsPhone Brand CompatibilityNote: The following list includes only some tested phone models. It does not mean the APP only supports these models. For more compatibility details, please refer to the WIKI page.Phone BrandCompatibilityiPhone√Huawei (Android)√Honor√VIVO√Xiaomi√Redmi√OPPO√SamsungNot supportedGoogleNot supportedResources & ServicesWiki:www.waveshare.com/wiki/1.54inch_NFC-Powered_e-Paper_(G)NFC Powered e-Paper SelectionModelDisplay colorResolutionDisplay size (mm)Outline dimension (mm)Refresh timePhone APPcase1.54inch NFC-Powered e-Paper (BW)Red / Black / White200 × 20027.00 × 27.0047.84 × 41.288s√√1.54inch NFC-Powered e-Paper (G)Red / Yellow / Black / White200 × 20027.00 × 27.0047.84 × 41.2815s√√2.13inch NFC-Powered e-PaperBlack / White250 × 12223.70 × 48.5565.35 × 40.052s√√2.13inch NFC-Powered e-Paper (G)Red / Yellow / Black / White250 × 12223.70 × 48.5565.35 × 40.0516s√√2.7inch NFC-Powered e-Paper ModuleBlack / White264 × 17657.29 × 38.1984.50 × 47.506s√×2.9inch NFC-Powered e-PaperBlack / White296 × 12866.89 × 29.0587.50 × 47.702s√√4.2inch NFC-Powered e-PaperBlack / White400 × 30084.80 × 63.60105.00 × 94.104s√√NFC Sensing Position Reference1.54inch NFC-Powerede-Paper2.13inch NFC-Powerede-Paper2.7inch NFC-Powerede-Paper2.9inch NFC-Powerede-Paper4.2inch NFC-Powerede-Paper7.5inch NFC-Powerede-PaperLieferumfang1.54inch NFC-Powered e-Paper (G) x1Lanyard x112