*Features*:

*Automatic Dog Training*:The transmitter emits a harmless radio signal in a radius around itself and the signal is detected by the collar. If your dog walks out of the signal boundary; the receiver will send sound warning first and then emit safe static stimulation until the dog goes back into the signal boundary. In this way; your pet will gradually recognize the existence of fence boundaries and learn to stop at the warning signal.*Adjustable Boundary Range & Shock Level*:You can customize the 4-level adjustable radius of the boundary from 131ft to 722ft; suitable for both indoor and outdoor usage. With 0-8 level adjustable shock intensity; you can adjust the stimulation level whenever needed.*Adjustable Neck Circumference*:With an adjustable neck circumference of 5.5in-23.6in; it’s suitable for small; medium; and large dogs weighing 4lbs+.*IP67 Waterproof Collar*:The IP67 waterproof receiver can work normally when your dog swims or runs in the rain. Make sure that the charging port is well-sealed before the dog enters water.*USB Rechargeable*:This USB rechargeable collar can stand by for up to 10days after being fully charged for 4hrs. No need to recharge it frequently.

*Specifications*:

​ Product Type: Dog Training ReceiverColor: BlackMaterial: ABSRemote Transmission Distance: 220m/722ftAdjustable Collar Circumference: 5.5in-23.6inReceiver Battery: 1*Built-in 3.7V 300mA LithiumCharging Time: 4HrsStandby Time: 10DaysShock Intensity Level: 0-8 AdjustableReceiver Waterproof Rate: IP67USB Cable Length: 83cm/32.7inReceiver Size: 6.5*3*4cm/2.6*1.2*1.57inReceiver Weight: 52g/0.11lbsPackage Size: 15*12*5.5cm/5.9*4.7*2.2inPackage Weight 142g/0.3lbs

*Package Lists*:

1 x Receiver1 x USB Cable1 x Collar4 x Metal Probes4 x Conductive Silicone Jackets