This ultra-compact receiver/collar is designed for dogs as small as 10 lbs. Features 'Nick' and 'Constant' stimulation along with the High Performance Pager. The receiver and collar are fully waterproof. System includes: 2 receiver collar, 1 handheld remote, rechargeable Li-Po battery, 2 inch antenna, 5/8 inch contact points, black lanyard, 0.75 x 28 inch black collar strap, 0.75 x 28 inch orange collar strap, rubber caps, wall charger and splitter cable. 1/2 mile range Precision stimulation levels (0-100) Non-stim high performance pager Water excelling enhanced contact points 2 hour quick charge battery