They're ok, though there's a nasty chemical processing smell to the stickers. I'm still not sure they're worth what they're made of. No instructions, testimonials, or even a product insert label, when you get them in a pretty, smelly gold sleeve, though you don't really need instructions for stickers, lol. They're very durable and don't wear easily, despite pressure and contact w/ many surfaces & objects. The price increased $4 since I ordered them. That said, the designs on them are beautiful. I just don't understand what I paid for, & it would be nice if there were tests on devices like this, proving that they actually absorb or render harmless, various wireless frequencies, and at what range. If they were cheaper, I might order 2 more packs just to see if they made a difference if placed closer together in larger quantity. I have 3 on my laptop & have noticed a very slight reduction in sensitivity to EMF. I didn't notice this slight difference until I put 1 sticker where my right hand rests on the keyboard. I had originally placed 2 on the base of the laptop, 1 over the wifi card, & 1 over the processor, and it made zero difference. I left things like that for 2 weeks, before I decided to try putting one of the stickers on the keyboard area. I'm still not clear on whether or not I'd buy this product again, but like the seller, Crownstarqi, b/c they are sending me a few more stickers so that I can see if multiple stickers on more devices makes a difference. This is very kind of them, & they have great customer follow-up. -Account holder's progeny.

Katie Wells, CTNC, MCHC, Founder and CEO of Wellness Mama, has a background in research, journalism, and nutrition. As a mom of six, she turned to research and took health into her own hands to find answers to her health problems. is the culmination of her thousands of hours of research and all posts are medically reviewed and verified by the Wellness Mama research team. Katie is also the author of the bestselling books The Wellness Mama Cookbook and The Wellness Mama 5-Step Lifestyle Detox.

The present study was undertaken to determine the influence of low intensity microwave radiation (900, 1800, or 2450 MHz for 2h/day, 5days/week, for 60 days) on oxidative stress, inflammatory response and DNA damage in rat brain. Low intensity microwave exposure resulted in a frequency dependent significant increase in oxidative stress markers, reduced levels of GSH and SOD, increased levels of pro-inflammatory cytokines, and significant DNA damage in microwave exposed groups compared to controls. In conclusion, the present study suggests that low intensity microwave radiation induces oxidative stress, inflammatory response and DNA damage in brain by exerting a frequency dependent effect. The study also indicates that increased oxidative stress and inflammatory response might be the factors involved in DNA damage following low intensity microwave exposure.
By comparison, even a very powerful high-end Wi-Fi router only produces around 1 watt of microwave energy and, unlike the magnetron in a microwave oven, a Wi-Fi router radiates that minuscule 1 watt of power in a bubble-like-cloud around the router. In other words, if you wanted to heat up even a milliliter of water above room temperature using this energy, you’d be waiting…well, forever.
US government agencies conclude there is no scientific evidence proving that cell phones cause cancer or other health problems. The Federal Communications Commission (FCC), [4] US Government Accountability Office (GAO), [5] and the US Food and Drug Administration (FDA), [47] have all concluded that there is no evidence in the scientific literature proving that cell phones cause brain tumors or other health problems. According to the FDA, "attempts to replicate and confirm the few studies that did show a connection [between cell phone radiation and head tumors] have failed." [69]
Niels Kuster, a Swiss engineer, initially filed a conflict-of-interest statement affirming only that his research group had taken money from “various governments, scientific institutions and corporations.” But after Kuster co-authored a summary of the WHO’s findings in The Lancet Oncology, the medical journal issued a correction expanding on Kuster’s conflict-of-interest statement, noting payments from the Mobile Manufacturers Forum, Motorola, Ericsson, Nokia, Samsung, Sony, GSMA, and Deutsche Telekom. Nevertheless, Kuster participated in the entire 10 days of deliberations.39
This study was an in-vitro pilot study which established the effect of radiofrequency radiation from 2.4 GHz laptop antenna on human semen. A test of significance between results of semen parameters using Mann-Whitney U- test at 0.05 level of significance showed a significant effect of RFR exposure on  sperm concentration, motility and morphology grading.
33. Avoid Electro Hypersensitivity (EHS) due to the location of an Electromotive Force (EMF) source. “Don’t wear metal-rimmed glasses when using a cell phone,” advises the Center for Safer Wireless. Additionally, the Center for Safer Wireless suggests that you should “refrain from using your cell phone in a car, bus or train. Metal reflects wireless radiation, and it bounces around you when on a cell phone in this environment.”– Cell Phone Safety Tips, Center for Safer Wireless; Twitter: @SaferEMF
But meanwhile know for certain that research is confirming that exposure to ICRW or Information Carrying Radio Waves, also called   wireless energy, can do all kinds of things from compromising immunity and causing the body to react by forming tumors to creating symptoms like headaches, trouble sleeping, anxiety and ringing in the ears. Other common sources of this same type of "non-ionizing radiation" include: cell phones, baby monitors, and computers and Smart Meters. Studies of symptoms from exposure to RF microwave(yes this EMF energy goes by many titles!) include heart racing, tingling sensations, numbness, dizziness, and fatigue. 
DefenderShield Cellphone Radiation Case also claims independent testing and says in their website: That a "sophisticated layering of separate non-toxic, human safe materials processed for maximum radiation blocking efficiency. Each material has unique and targeted radiation-shielding characteristics designed to work in unison to eliminate all radiation emissions from 0 to 10 GHZ and Defender Shield technology refracts, conducts and finally absorbs all these potentially harmful emissions."  In this demonstration, the radiation level measured when DefendeShield case was on is still quite a bit above the level of exposure that I would recommend. I personally do not recommend-holding a phone with a shielding case to your head as the DefenderShield website shows a young woman doing as she demonstrates the product. 
This Ethernet cable can be a source of RF radiation and so needs to be shielded. There are lots of different qualities of cable category 5, 6, 7 etc. I recommend buying at least Cat 6a SSTP (screened shielded twisted pair) Ethernet cable. Maybe the cable that came with your modem/router is Cat 6a SSTP. In that case you’re OK. If in doubt change it.

Ok, update: Crownstarqi very kindly sent me 2 cell phone shield stickers, but I originally ordered the 6 pack of much thinner rectangular stickers that I could stick more places. I'm too electromagnetically intolerant to even own a cell phone, so I don't know what to do with these! I don't dare bother them about this, b/c they sent me the shield things all the way from China, but I was really hoping to just put more of the rectangular 6-pack stickers on my laptop, to see if more made a difference. It was a very nice gesture on their part, but I'm now concerned that they thought my initial review was of the shield-shaped stickers, when it was a review for these rectangular ones. I noticed that someone else thought they were ordering the 6-pack, and ended up getting a single shield-shaped sticker, instead. This is very confusing & I'm going to just...count my blessings & get on w/ my life. I don't trust any stickers that make the "negative ion" claim, b/c they're often radioactive. I don't realy know what to say, or what review to give, at this point, but I think Cronstarqi are very kind to have sent me something for the trouble w/ my original order, even though what they sent as a replacement was NOT what I had originally ordered. Maybe this was deliberate? I don't know. The package on the shield-shaped stickers says, "The product can only be used as health care instead of replacing the professional medical treatment." I'm so confused, but thanks anyway, to the seller, and the shield-shaped stickers are very pretty. I'd review them, but I have no cell phone & no verified purchase to back up my review. -Account holder's progeny.

Exposure to non-thermal radio frequency radiation from Wi-Fi and cellular phones can disrupt normal cellular development, especially fetal development. A 2004 animal study linked exposure to delayed kidney development. [4] These findings were supported by a 2009 Austrian study. In fact, the disruption of protein synthesis is so severe that authors specifically noted, “this cell property is especially pronounced in growing tissues, that is, in children and youth. Consequently, these population groups would be more susceptible than average to the described effects.” [5] In short, bathing the developmentally young in Wi-Fi increases their risk of developmental issues.
The present study was designed to determine the effects of 2.45 GHz EMR (60 min/day for 28 days) on the brain antioxidant redox system and electroencephalography (EEG) records in rat, as well as examine the possible protective effects of selenium and L-carnitine. EMR-exposed animals showed lower concentration of vitamins A, C, and E than controls, although their concentrations were increased by selenium and L-carnitine supplementation. Animals which received selenium and L-carnitine in addition to EMR also showed lower levels of lipid peroxidation. Results indicate that L-carnitine and selenium seem to have protective effects on the 2.45 GHz-induced decrease of the vitamins by supporting antioxidant redox system.

In September 2014, Californian oncologists reported four similar case histories of young women who had developed breast cancer in precisely the areas where they normally carried their smartphones. What shocked the doctors was that these women were aged 21 to 39 and had no family history or other risk factors relating to cancer. All their cancers “had striking similarity, all tumours were hormone positive… (with) an extensive intraductal component and… near-identical morphology.” (CaseRepMed., 2013).