emmiter:

1.spray water protected

2.2 light LED diodes

3.including 1 memory LED

4.automatic night LED function.(this device has "night vision"function to avoid wearing out the battery too quickly,please power it off after every use

5.special drop back function:different LED color and sound

6.tone and volume control( 4 levels)

7.plug socket for bite indicator

8.battery:9V6LR61

receiver:

1.three buttons

 2.battery:3 X 1.5V AAA