Here are some pictures of people wearing battery packs. I'm going with its a battery pack. She is over weight and sitting down. It would be very uncomfortable to be leaning into it.
These are transmitters for a wireless mic. I have these. No one puts them on their legs, in their shoe, etc. The mic wire would not be long enough and it would yank at your ear. If I had to wire up Oprah, I.d hide it under a cushion if she didn't want it on her waist.
Here are some pictures of people wearing battery packs. I'm going with its a battery pack. She is over weight and sitting down. It would be very uncomfortable to be leaning into it.
https://www.bing.com/images/search?view=detailV2&ccid=VyZ1acpV&id=DF5C3B894C64B517E40CC5E9124BFA80734A4625&thid=OIP.VyZ1acpV86uSJQ-VmxXnlgBwEs&mediaurl=https%3a%2f%2fi.dailymail.co.uk%2fi%2fpix%2f2011%2f08%2f31%2farticle-2032083-0DA4B0B000000578-27_306x819.jpg&exph=819&expw=306&q=photos+of+stars+wearing+mic+packs&simid=608024840688070996&ck=F735CAD5DFD92092BF266F83B335DA27&selectedIndex=0&FORM=IRPRST&ajaxhist=0
These are transmitters for a wireless mic. I have these. No one puts them on their legs, in their shoe, etc. The mic wire would not be long enough and it would yank at your ear. If I had to wire up Oprah, I.d hide it under a cushion if she didn't want it on her waist.
The foot/ankle would be the LAST place you put the transmitter.
This coming from someone who's been on countless productions over the past 2 decades