Applicable models:Suitable for all NFC phones Product Features:The displayed photos can be easily replaced Power supply :NFC wireless power supply Resolution:200x200 Point spacing:0.138 x 0.138 Please note that this product does not include and is suitable for phone models released after 2018. Display colors:red, black, white Refresh time:8s Visual angle: 170 ° External dimensions:47.84mm x 41.28mm Display size:27.00mm x 27.00mm Colour:White Material:Plastic+Metal Package Contents: 1 * NFC Function Keyring Display Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.