Newest updated version of P-collar 640.  Same price, higher quality!!

Patpet high quality electric 1000M remote waterproof shock training collar dog trainer

Innovative blind operation with touch distinguishing mode buttons
1000M Remote Training Range
User expandable to a two-dog system
Tone, vibration, and shock commands
16 adjustable progressive intensity levels for vibration and shock

White backlit LCD indicating intensity level and Battery
2-hour rapid charging lithium polymer battery
100% Waterproof receiver and rainproof transmitter