What is the Oxy-Angel’s effective range? lester Ng October 07, 2019 08:32 Updated Follow The Oxy-Angel air purifying necklace can effectively clean air within a 3-foot range. Related articles Can I leave the Oxy-Angel turned on continuously? How long will the Oxy-Angel last with fully charged batteries? How does the Oxy-Angel work? Does the Oxy-Angel make noise when functioning? Can Oxy-Angel purify second-hand smoke? Comments 0 comments Please sign in to leave a comment.