Lost white Sony Bluetooth headphones with charging case near Black Hills scenic viewpoint in South Dakota.

Description

I misplaced my white Sony Bluetooth headphones and their charging case while I was hiking near the Black Hills in South Dakota last Sunday. I last remember using them to listen to music while waiting at a scenic viewpoint and realized they were missing when I returned to my car. They might have fallen out of my backpack. They are pretty distinctive and in good condition.