Meta Raybans are basically a combination of eyeglasses, a camera, and a Bluetooth headset. Meta Ray-Ban smart glasses use a dual-band WiFi antenna that supports both 2.4 GHz & 5 GHz WiFi networks aswell as Bluetooth 5.0 (at 2.4 GHz) allowing it to connect to both WiFi and Bluetooth networks/devices. Airpods use W1 or H1 Bluetooth chip which uses just Bluetooth at 2.4 GHz With headphones, you can take them off and put them in a bag anytime you like, but it’s not the same with prescription glasses. Wearing them all day is not a matter of choice. And with smart glasses, you’ll most likely keep them connected to your phone. And exposing yourself – especially your brain – to that much EMF and for that long a time can result in severe EMF-induced health problems. Besides that, your eyes are also particularly vulnerable to damage from EMF exposure. So, when you wear smart glasses all day, their EMF emissions can cause damage to your eyes. PMID: 19517034 PMID: 30226071 PMID: 2488031 In May 2004, Dr. Lai and Singh published a groundbreaking study that confirmed the link between prolonged EMF exposure and DNA damage. ehp.niehs.nih (dot) gov/doi/10.1289/ehp.6355 They did a series of experiments between 1994 and 1998 to determine if the supposedly “safe” doses of non-ionizing EMF radiation caused DNA damage. What exactly is DNA damage? Per researchers Kaufmann and Paules: “DNA damage is defined as an alteration in DNA structure that is capable of causing cellular injury and reduces viability or reproductive fitness of the organism.” In simple words, human DNA contains two strands, which contain information passed down from generations. If there’s damage to it, the individual will suffer from a range of problems, including unnatural cell death, premature aging, and inability to reproduce. Lai & Singh in their research found that EMF-induced DNA damage begins after two hours of exposure. Imagine what a full day of exposure, and that too daily, from Ray-Ban smartglasses can do. doi (dot) org/10.1002/bem.2250160309 Researchers from Lund University, Sweden, studied EMF’s effect on the blood-brain-barrier for ten years. Their study found that constant EMF exposure from common sources like cell phones, laptops, tablets, WiFi routers, and smart meters loosens the blood-brain barrier’s integrity. The blood-brain barrier, or BBB, is a wall that keeps unnecessary fluids away from your brain. If it’s not functioning as it’s supposed to, fluids like albumin can easily enter the brain, leading to problems like epilepsy and multiple sclerosis. Besides weakening your BBB, EMF exposure has also been known to cause other neurological problems like: — Impaired learning and memory — Constant migraines — Massive changes in sleep habits — And neurological cognitive disorders like dizziness, tremors, depressive symptoms, loss of concentration, and loss of memory. All smart wearable devices rely on wireless technologies to provide you with their fancy features and services. This means their EMF emissions will be the same as well as the EMF-induced health effects. tl;dr They all are the same with close proximity to the head. I wouldn't use none of them.