diff --git a/README.md b/README.md
index 99c0ee2..7ef1b9d 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,7 @@ let nearest = index.get_nearest(v0.as_ref(), 5, -1, true);
 
 ### kotlin/java
 
+It uses JNI bindings to rust crate and is ~5-10x faster than [pure java implementation](https://github.com/spotify/annoy-java) in [benchmark scenario](https://github.com/hanabi1224/RuAnnoy/tree/master/bench)
 #### Install via [jitpack.io](https://jitpack.io/#hanabi1224/RuAnnoy)
 [![Release](https://jitpack.io/v/hanabi1224/RuAnnoy.svg)](https://jitpack.io/#hanabi1224/RuAnnoy)
 ```gradle