This study presents the wireless communication module of an implantable multi-site intracranial recording device composed of four arrays of 49 electrodes. The implant is designed for long-term micro-electrocorticography (μECoG) to enable precise epileptic seizures forecasting. The communication module is based on an off-the-shelf Ultra Wide Band (UWB) chipset that achieves up to 96.47 % data transmission at 60 cm. It transmits 4.25 Mbit/s using 29.60 mW of power, resulting in power consumption of 6.96 nJ/bit. These results justify further research and development into a more integrated solution, such as an Application Specific Integrated Circuit (ASIC).