Credit: Copyright © 2016 Jason S. Radowsky et al., "A Timely Intervention: Endoscopic Retrieval of a Swallowed Magnetized Activity Watch," Case Reports in Gastrointestinal Medicine 
 
 As a result, the doctors decided to try to remove the tracker using a procedure called an endoscopy, which involves using a flexible tube with a camera to see inside the stomach. Case Report 
 
 This is a case of a healthy, well-developed, 13-year-old girl who was reported to have accidentally swallowed a Shine Misfit fitness tracking watch (Misfit Wearables, Burlingame, CA, USA). While swimming, she removed the magnetized functional portion of the watch from its band and placed this in her mouth at which time it was swallowed by mistake. At the time of presentation, the object was identified in the stomach on an emergency department X-ray at our community-sized hospital. Doctors waited 30 hours to see if the device would pass through the rest of the girl's digestive system, but the tracker didn't budge. Following this 72 min procedure, the patient recovered well and was discharged home the following day with no apparent sequela from the event. [7 Weird Things People Have Swallowed] 
 
 "The watch retained normal function despite the low pH [or, acidity] of the stomach and manipulation upon retrieval," the doctors, from the Brian Allgood Army Community Hospital in Yongsan, South Korea (a U.S. military hospital), wrote in the Jan. 19 issue of the journal Case Reports in Gastrointestinal Medicine. "When synchronized to her mobile device, the [Misfit Shine] watch accurately recorded all advertised data points, to include steps taken, calories burned [and] sleep cycles, and [it] maintained accurate time," the doctors said. Figure 1: Supine abdominal X-ray showing watch in the stomach. Disclaimer 
 
 This is an original work by the authors.
– The Misfit Shine activity tracker is not only waterproof, but can apparently also withstand stomach acid. Doctors say a 13-year-old girl in South Korea removed the tracker from her watch band—it can also be fixed to necklaces and clipped to clothing—and popped it in her mouth while she went swimming; why she did so is unclear, as Live Science points out the tracker can be worn in a pool. At some point, she accidentally swallowed the disc, which is about an inch in diameter. A subsequent X-ray showed the device was in her stomach, and 30 hours later it still hadn't moved on. Doctors feared the lithium battery could come out of its casing and expressed "concern for obstruction at the ileocecal valve [which separates the small and large intestines]," and so they intervened. In a 72-minute procedure, they used an endoscopic snare to remove the device through the girl's esophagus. "To our knowledge, this is the first documented case of salvaging an operational watch from the stomach using an endoscopic technique," doctors wrote in the Jan. 19 issue of Case Reports in Gastrointestinal Medicine. When it was all over, the device still worked. "When synchronized to her mobile device, the [Misfit Shine] watch accurately recorded all advertised data points to include steps taken, calories burned, sleep cycles, and maintained accurate time," doctors wrote. The patient was sent home the next day. (A rare disorder keeps this women from swallowing.)