diff --git a/README.md b/README.md
index 81fa767..8dfc950 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,12 @@
 # ewelink-api
-> eWeLink API for Node.js
+> eWeLink API for JavaScript
+
+
+## Key features
+* can run on browsers, node scripts or serverless environment
+* set on/off devices
+* get power consumption on devices like Sonoff POW
+* listen for devices events
 
 
 ## Installation
@@ -9,11 +16,4 @@
 
 
 ## Usage
-Check docs at https://ewelink-api.now.sh.
-
-
-## Testing
-1. open `test/_setup/credentials.json` and update parameters.
-2. in a terminal, `npm run test`
-
-* Tests needs to be performed serially, so if run jest manually, add `--runInBand` parameter.
\ No newline at end of file
+Check docs at https://ewelink-api.now.sh
\ No newline at end of file
diff --git a/main.js b/main.js
index 768c920..9df8ce3 100644
--- a/main.js
+++ b/main.js
@@ -142,6 +142,9 @@ const getDeviceMixin = require('./mixins/devices/getDeviceMixin');
 const getDeviceChannelCountMixin = require('./mixins/devices/getDeviceChannelCountMixin');
 const getFirmwareVersionMixin = require('./mixins/devices/getFirmwareVersionMixin');
 
+/* LOAD MIXINS: websocket */
+const openWebSocketMixin = require('./mixins/websocket/openWebSocketMixin');
+
 Object.assign(
   eWeLink.prototype,
   getDevicePowerStateMixin,
@@ -169,4 +172,6 @@ Object.assign(
   getFirmwareVersionMixin
 );
 
+Object.assign(eWeLink.prototype, openWebSocketMixin);
+
 module.exports = eWeLink;
diff --git a/mixins/websocket/openWebSocketMixin.js b/mixins/websocket/openWebSocketMixin.js
new file mode 100644
index 0000000..5e4e241
--- /dev/null
+++ b/mixins/websocket/openWebSocketMixin.js
@@ -0,0 +1,37 @@
+const W3CWebSocket = require('websocket').w3cwebsocket;
+const WebSocketAsPromised = require('websocket-as-promised');
+
+const payloads = require('../../lib/payloads');
+
+const openWebSocketMixin = {
+  /**
+   * Open a socket connection to eWeLink
+   * and execute callback function with server message as argument
+   *
+   * @param callback
+   *
+   * @returns {Promise<WebSocketAsPromised>}
+   */
+  async openWebSocket(callback) {
+    const payloadLogin = await payloads.wssLoginPayload({
+      at: this.at,
+      apiKey: this.apiKey,
+    });
+
+    const wsp = new WebSocketAsPromised(this.getApiWebSocket(), {
+      createWebSocket: wss => new W3CWebSocket(wss),
+    });
+
+    wsp.onMessage.addListener(message => {
+      const data = JSON.parse(message);
+      callback(data);
+    });
+
+    await wsp.open();
+    await wsp.send(payloadLogin);
+
+    return wsp;
+  },
+};
+
+module.exports = openWebSocketMixin;
diff --git a/package-lock.json b/package-lock.json
index f194a4e..962e211 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "ewelink-api",
-  "version": "1.5.1",
+  "version": "1.6.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 6fbe7d0..249167f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ewelink-api",
-  "version": "1.5.1",
+  "version": "1.6.0",
   "description": "eWeLink API for Node.js",
   "author": "Martín M.",
   "license": "MIT",