Heart Rate Monitor and Bluetooth Low Energy

I would like to retrieve data from a BLE chest heart rate monitor. The device is non-proprietary, so any BLE devices could be used (i got data from an Intel Edison device very easily).

Btw, i want to connect the HRM to an Arduino and get the datas... Doesn't seem very easy to do...
I ordered a Bluno (from DFRobot), but the documentation is very basic...too basic.

So, any suggestion will be welcome :wink:
Thanks a lot !