The BM77SPP03MC2 Bluetooth module is designed for both Bluetooth 3.0 Std. SPP for other OSs App Accessory and BLE 4.0 iOS App Enabled Accessory via Bluetooth connectivity. 
It is available in the 2.4GHz ISM band Class 2 Radio, compatible with Bluetooth Core Specification Version 3.0 + EDR & BLE 4.0. 
IS1677SM single chip solution combines transceiver and baseband function to decrease the external components. 
It narrows down the module size and minimizes its cost. 
The optimized power design minimizes power consumption.