Note: Since I cannot directly access or retrieve the official PDF manual, this text is compiled from typical user guides and specifications for this product. 1. Product Overview The BlitzWolf BW-FYE7 are Bluetooth 5.1 (or 5.0, depending on version) true wireless earbuds with a semi-in-ear design. They feature touch controls, a charging case with digital LED battery display, and support for stereo calls and music.