Features :100 levels of vibration100 levels of static (optional)The levels can be altered by use of up & down buttonA lone button activates a tone on the receiverThe system can be used for 1 or 2 receiversThe receiver will turn off if it is unused for 4 minutes to save powerAny Movement will activate the receiver in standby modeThe transmitter will go into standby mode if there is no operation after 20 seconds and turn off after 2 minutes.Specification :Remote: Can control two collars at the same timeRemote distance: 300 metersChannels: 2 channels for 2 dogsFunctions: 1, static shock. 2, vibration. 3, beep. 4, indication light. 5, LED lightReceiver battery: AAA battery (Not Included)Transmitter battery: 6V alkaline battery (Not Included)Turn off: Automat.