Mobile FR3 Duo combines the FR3 Duo dual-arm system with the Tactile Mobile Robot omnidirectional base into a mobile embodied AI platform. It integrates dual-arm manipulation with rich perception including dual LiDARs, seven cameras, and an IMU, powered by an NVIDIA Jetson AGX Orin. The platform supports whole-body coordination for real-world manipulation tasks with a base speed of 1.75 m/s, 100 kg base payload, and dual 3 kg arm payloads, operating at 1 kHz control frequency via the Franka Control Interface.