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diff --git a/README.md b/README.md
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+++ b/README.md
@@ -80,6 +80,7 @@ API
 | hourStep                | Number                            | 1 | interval between hours in picker  |
 | minuteStep              | Number                            | 1 | interval between minutes in picker  |
 | secondStep              | Number                            | 1 | interval between seconds in picker  |
+| focusOnOpen             | Boolean                           | false | automatically focus the input when the picker opens |
 
 ## Test Case