RADARCAN® R-100 Plus Portable Electronic Mosquito Repeller, Premium ultrasonic Repellent Bracelet Watch, Highly Effective. Eco-Friendly. Baby, Kids and Adults. DEET-Free. All Outdoor Activities (BLUE)

I have used ultrasonic mosquito repellers like this one, which mimics the sound of a male mosquito to keep the biting females away, for many years now.In all the years I have kept one of these devices whining away on my nightstand while I sleep, I have NEVER been bitten by a mosquito!So when the last of my Sunbeam ultrasonic repellers started having a problem with its transducer, I looked high and far (well, Yahoo Search and here at Amazon) for a replacement.The first two devices I tried were junk. Neither one gave off the male mosquito sound, which despite the "ultrasonic" label is audible as a high-pitched whine. Back these pretenders went.Then I came upon this one, which has a five-year warranty and is supposedly the category originator.Eureka! It works like a champ, emitting the sound I was expecting in one's choice of two volumes, the loud being louder than the Sunbeam.The little device has a clip on the back that you can attach to a belt or pocket. Or you can put the gizmo in the silicone bracelet provided and wear it like a watch.My only concern was the repeller's use of a CR-2032 button battery instead of the AAA the Sunbeam took.Generally I like to use rechargeable batteries for a gadget like this, but I couldn't find a rechargeable CR-2032 with the right voltage (3v) or as much amperage for extended use.So I'll see how long these non-rechargeable CR-2032's last in this repeller. Each battery costs around 50 cents at Amazon. If each one lasts a few months, that's not a high price to pay for freedom from mosquito bites. And ultrasonic repellers like this don't use smelly repellent chemicals you have to refill all the time...In conclusion, two (bite-free) thumbs up for this ultrasonic repeller!

I like the design, but when you turn it on, it’s a high-pitched sound even if I tie it on my ankle farthest away from my ear. It’s just a piercing high little sound even though it’s not like a car alarm but golly gosh I don’t wanna hear that while I’m trying to hike and have a nice time, maybe it works maybe it doesn’t I’ll never know because I’m not wearing that out in the woods when I’m trying to enjoy myself, lol

Bought this for a tropical vacation and believe that it did provide some coverage. I was bitten less than I would normally.

What a great way to get rid of the nasty mosquitoes bites as this clock keeps them away from you. It works so much better than any repellent and it is easy to use. All you need is to install the battery and wear it around your wrist, or in your pocket, or put it over the table next to you and the mosquitoes will not bother you anymore so you can enjoy outdoors as much as you want. I fully recommend it.

I ride my horses on the berm on L.A. River. I was getting a fair amount of mosquito bites on arms, face & neck. I ordered the RADARCAN. It emits two types of hi-pitched whistles. It is a little clumsy to activate. The horses didn't like it much, at first. I hung it on the back strap of the cap I wore that day and activated it. I got no more bites. I have to consider it effective. It only lasts, per paperwork for four hours, so overnight will be a challenge-- Not sure how long battery will last---

My job means i am always outside and i tested this thing. It does not work at all. Don’t buy it

The media could not be loaded.  This product is miraculous!!! We have ordered numerous products this season as we have been inundated by bugs this year. Tired of sprays, patches, hanging things from trees and doorways- this works!! I already have friends and neighbors ordering. We have 10 acres of fields, forest and a Brook. First time in months I can work outside, in chicken coop and dog yard, down by the water and in the trees without getting eaten alive. Thank you!!

Does not do as advertised. Great for pretending you're under house arrest. That's about it. There is no way this review goes live lol.

Pues si sirve, hasta ahora ni un mosco me a picado, llevo dos semanas usandolo, y estoy a salvo. aunque el sonido si lo percibes y lo traes todo el diaaaaaa, es un beeeeeeeee en los oidos todo el tiempo, preferi cambiarlo al tobillo para no percibirlo porque si lo traes en la muneca te duele hasta la cabeza de escuchar el ruidito todo el tiempo.

NO ME GUSTO EL COLOR, ME GUSTARIA QUE HUBIERA SIDO EN COLOR NEGRO

No sirve para nada,no ahuyenta a los moscos.

Muy ruidoso