diff --git a/README.md b/README.md
index 679467d..ec65f9b 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,13 @@
-# ATtiny85-USB-Tester
-Simple USB Power Tester
+# USB Power Tester based on ATtiny45/85
+Simple USB Power Tester based on ATtiny45/85 and INA 219. You can switch between different screens by pressing the SET button.
+
+|Parameter|Value|
+|-|-|
+|Voltage|3V - 12V|
+|Current|max 5A|
+|Precision|4mV / 1mA|
+
+![IMG_20200528_172038_x.jpg](https://image.easyeda.com/pullimage/4j7P3MET7HhN669FMKdTfiZ1XwqVarHYLU3UOEZv.jpeg)
+![IMG_20200528_172119_x.jpg](https://image.easyeda.com/pullimage/LORMqUaLmmN483w0B8SMBrNtKXEOCVjlLunBzuNg.jpeg)
+![IMG_20200528_172221_x.jpg](https://image.easyeda.com/pullimage/dZ775PpXM0R2nRWyUrkCIs53FVuBVIK6hRWURprz.jpeg)
+![IMG_20200528_172239_x.jpg](https://image.easyeda.com/pullimage/moE1NVdTYPggxly5Qm69yMyY5wfAJkTwBuSVVanD.jpeg