Geomagnetic Compass H501M-02 Module for Hubsan H501M - Maison Du Drone
Hubsan H501M: Another Inexpensive GPS Option
Hubsan H501M X4 RC Drone Quadcopter spare parts body shell blade motor ESC receiver Camera board GPS LED remote controller etc.|Parts & Accessories| - AliExpress
USB Charging Cable H501S-26 for Hubsan X4 H501S H501M RC Quadcopter Spare Parts | eBay