RF Type Transceiver; Bluetooth® Smart Ready 4.x Dual Mode from the Evaluation board.As you may know, this RF Board comes from the well-known PAN1026 series product line.
ENW89837AYKF Features
Transceiver; Bluetooth® Smart Ready 4.x Dual Mode Type
ENW89837AYKF Applications
There are a lot of Panasonic Electronic Components ENW89837AYKF RF Boards applications.