Bousnic 4000 ft Training Collar: 2 Channels, Lock, IPX7

Why it matters

An external antenna gives Bousnic's stated 3/4 mile (4000 ft) range. Sound, vibration and 16 static levels have separate buttons for blind use, a slide lock prevents accidental presses, and two channels switch between dogs. The receiver is IPX7 on a strap up to 27 in.

Who it's for, and who should skip it

Good fit if

Large properties
Two dogs
Blind operation

Look elsewhere if

Dogs under the maker's minimum weight
Fearful or reactive dogs without a trainer
Owners wanting a quick fix for aggression

Pros and cons

Pros

4000 ft
Lock
Two channels

Cons

Antenna bulk
16 levels
Unpublished output

Limitations to weigh

Static stimulation is an aversive. Many vets and welfare groups advise reward-based training first and a qualified trainer before using any e-collar; start at the lowest level that gets a response and never use it in anger.
Check fit daily, move the receiver every few hours and limit wear time (makers commonly say no more than 8 to 12 hours a day) to avoid pressure sores.
Range figures are the maker's open-ground numbers; trees, hills and buildings cut real range.
Budget e-collars rarely publish stimulation output, so one brand's level 50 is not another's; test levels gradually.

Specifications

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Price seen	$46.74	Retailer
Material	Polyester	Retailer
Closure	Buckle	Retailer
Dog size	All Breed Sizes	Retailer
In the box	Universal USB charging cable	Retailer
Model number	pcollar 670	Retailer
Care	Damp cloth wipe	Retailer