Martin Transmiter 3000. Will work on muti dogs when programmed. This is for the Transmitter only. No receiver or finger kick. This unit works fine but has issue when trying to pair with finger kick. Its comes with mutable  electrodes. Case, test equip, and collar is included. A new micro receiver can be purchased for about $130.00. This system is by far the best on the market. Its was developed by Bart Bellon.