KONNWEI KW901 Mini Bluetooth Wireless WIFI OBD-II Car Auto Diagnostic Scan Tools(Black) * Small size, compact structure.?Plug and never unplug .Package include a E-uniq car cleaning towel as free gift * Stable wireless connection.* No wires or batteries (adapter is powered by the diagnosis size sockets) * Stop communication, wait half an hour, auto sleep * Supports all OBDII protocols,Compatible with Android phones Only - NOT FOR USE WITH iOS DEVICES! Wireless (Bluetooth). * The adapter uses the fastest and most reliable ARM chips