Receiver functions:                                                                                                                           
1.The recevier can record and play your voice.
2.Recevier can record 10 seconds message.
3.Receiver included high quality high-capacity rechargeable battery.                            
Controller Functions:                                                                                                           
1.Range up to 300 meters.
2.Digital adjust level of vibration.
3.Digital adjust level of static.
4.3 dogs training at the same time.
5.Multiple ways for training dogs.