This part is a kind of semiconductor called BT1212.

Function of this product has Bluetooth 4.0 modules.

Manufacturers : BOOMTECH SEMICONDUCTORS

Image and pinout :

Some of the text within the PDF file :

BT1212 BOOMTECH SEMICONDUCTORS CO.,LTD Product Specification Model : REV : DRAWN BY ： CHECKED BY ： APPD. BY： BT1212 V1.0 1/7 BT1212 1. Introduction Boomtech Semiconductors Co., Ltd the pioneer of the Bluetooth 4.0 modules BT1212 which is a high performance, cost effective, low power and compact solution. The Bluetooth module provides a complete 2.4GHz Bluetooth system BlueCore® CSR8670™ BGA consumer audio platform for wired and wireless applications integrates an ultralow-power DSP and application processor with embedded flash memory, a high-performance stereo codec, a power management subsystem, LED and LCD drivers and capacitive touch sensor inputs in a SoC IC. The enhanced Kalimba DSP coprocessor with 80MIPS supports enhanced audio and DSP applications. 2. Key Features [ ... ]

BT1212 PDF Datasheet Download