Six levels of momentary and continuous stimulation with separate buttons for each and a tone-only mode. Redesigned with a compact fixed antenna. Controls up to three dogs with the purchase of additional receiver collars (one included). Color-coded toggle switch quickly switches from one collar to another. One-mile range. Waterproof, rechargeable transmitter uses replaceable NiMH batteries. Waterproof receiver has interchangeable contact points (long and short) an on/off button, status LED and uses replaceable and rechargeable NiMH batteries. Made in USA.