diff --git a/src/const.py b/src/const.py
index fb8a640..a2434f9 100644
--- a/src/const.py
+++ b/src/const.py
@@ -3,8 +3,10 @@ import json
 DEFAULT_MODE = "production"
 
 WS_ADDR = "wss://ws.blockchain.info/coins"
-SUB_MSG = json.dumps({"coin": "eth", "command": "subscribe", "entity": "confirmed_transaction"})
+# Optionally `confirmed_transaction` can be used (bursts of data instead of a steady stream, which is worse for the overall performance)
+SUB_MSG = json.dumps({"coin": "eth", "command": "subscribe", "entity": "pending_transaction"})
 WS_RECONNECT_PAUSE = 2  # Seconds
+WS_INTERMSG_TIMEOUT = 1  # Seconds
 
 DEFAULT_EXPORT_PATH = "./data/export.json"
 DEFAULT_EXPORT_INTERVAL = 10800  # 3 hours