Description
The FRIENGOOD QG-05 is the lightest handheld deterrent on this shelf by a clear margin, at 1.76 ounces, and it publishes the widest frequency band, 25 to 40 kilohertz. Those two facts are the reason to look at it. Whether a wider band is actually better is a more interesting question than the marketing suggests.
It also charges in half an hour, which is the fastest figure in the category, and it carries a one year warranty. Below is what FRIENGOOD states, what a 40 kilohertz upper limit really means, and the one specification that is conspicuously missing.
What FRIENGOOD states
The manufacturer describes ultrasonic sound waves between 25 and 40 kilohertz, presented as safe frequencies that attract a dog's attention and discourage barking, digging, scratching, biting and climbing on furniture. There are two sonic modes: a low frequency mode described for daily bark training and a high frequency mode for curbing behaviour, and the listing explains the two exist so a dog does not become accustomed to a single tone.
Range is stated as up to 50 feet. Power is a built in 800 milliamp hour lithium ion cell with a USB Type-C port and a 5V 2A charging design, fully charged in 0.5 hours and stated to last 60 days. There is a flashing light and an LED illumination mode. Unit weight is 1.76 ounces, device dimensions are 4.33 by 1.18 by 1.18 inches, the colour is orange, and the warranty is one year.
A wider band is not automatically a better one
Twenty five to 40 kilohertz sounds impressive next to a competitor quoting 22 to 25, and the reasoning behind a wide band is sound: varying the pitch delays habituation, which is the standard failure mode for these devices. But higher is not the same as stronger.
Dog hearing extends well above the human ceiling, but sensitivity is not flat across that range; it falls off toward the top. A tone at 40 kilohertz is not necessarily more noticeable to a dog than one at 25, and depending on the animal it may be less so. So the useful part of this specification is the spread, not the ceiling. Two modes across a wide band give a genuine way to change the stimulus when a dog stops reacting, which is more than a fixed tone device offers, and more than the narrower band on the Kipvvo bark stopper allows.
The bullet says three speeds and then describes two modes
The first bullet is headed three speed safe frequency ultrasonic. The body of the listing then describes two sonic modes: a low frequency steady wave and a high frequency undulating wave. Three and two cannot both be right, and the listing never resolves it.
The most likely explanation is that a third setting exists for the light, or that an intensity step is being counted as a speed, but a buyer choosing on mode count is choosing on a number the page contradicts. The size field carries the same carelessness, recording 4.33 by 1.18 by 1.18 inches, which is a dimension rather than a size. As always in this catalogue, the specification block is a starting point rather than a source of truth.
Thirty minutes to charge, and why that matters more than it sounds
An 800 milliamp hour cell filling in half an hour at 5V 2A is a genuine convenience, and it addresses the practical reason these devices stop being used. A unit that takes three hours gets plugged in and forgotten. A unit that fills while the kettle boils gets topped up before a walk.
The 60 day figure should be read as an interval between charges under light use rather than as runtime, and heavy use of the LED will cut it substantially, since a torch draws far more current than a brief ultrasonic pulse. Type-C is the right connector, and a device that charges from the same cable as a phone is one less thing to lose. At 1.76 ounces it is also light enough to genuinely live in a coat pocket, which is the specification that decides whether a training aid is present at the moment it is wanted.
Two modes, and using them without teaching a dog to ignore you
The two modes exist for a reason the listing states plainly: to stop a dog getting used to a single frequency. That is the correct concern, and it points at the biggest practical mistake owners make with these devices, which is overuse.
A tone fired at every bark, every day, becomes background noise within a fortnight. Worse, if the dog is never rewarded for stopping, the tone carries no information; it is just an unpleasant thing that happens sometimes. The pattern that has any chance of working is sparing and consistent: wait for the specific behaviour being addressed, give the verbal command first, press briefly, then reward the moment the dog breaks off. That way the command becomes the useful signal and the device becomes redundant, which is the goal.
Alternating modes helps delay habituation but does not prevent it. If a dog stops responding after a few weeks, the answer is not a louder device or a longer press. It is that the tool has done what it can and the underlying cause of the behaviour has not been addressed. Boredom, alarm barking at a window, and under exercise all outlast any handheld gadget.
What the listing does not establish
There is no stated automatic shutoff. That is the significant gap. Competing units publish cutoffs at eight or ten seconds of continuous operation, and that limit is the main protection against an owner holding a tone on a dog that is not responding. Nothing here says what happens when the button is held down.
Sound pressure level is not stated, so the frequency band describes pitch without describing intensity. No minimum dog age is given, unlike several competitors that exclude dogs under six months. Water resistance is not rated. The 50 foot range comes with no test condition, and for a directional ultrasonic emitter outdoors that figure should be treated as an upper bound rather than a working distance. What the third speed is remains unexplained.
Who it suits, and who should choose something else
This suits an owner who wants the lightest possible unit to carry every day, values a published frequency spread over a single fixed tone, and will use it as a marker paired with a verbal command rather than as a remote control. The fast charge and the low weight are real, practical advantages, and a one year warranty is reasonable at this price.
Choose something else if an automatic cutoff is a requirement, and it reasonably should be; the LOVEPETPAL XP-20 publishes a ten second limit at similar money. Choose something else if the dog is very young or elderly, since no age guidance appears here. Choose something else if the barking happens when nobody is home, which no handheld device can address. And do not buy it as personal protection: the copy talks about driving away aggressive dogs, and a pocket emitter is not a defence. For that framing specifically, the SENOY repeller makes the same pitch with the same limits. Compare across our handheld deterrent shelf and the sonic repellent listing.
