Jane Q Universal Quartz Remote Control 29.800 MHz 5 Colours Available 4 Channel Remote Control Compatible with All Remote Controls with Same Fixed Code (Black) : Amazon.de: DIY & Tools
2x 25.00M-SMDXT324 Resonator Quartz 25 MHz ±30 ppm 20 pF SMD 3.4 x 2.7 x 0.75 mm YIC : Amazon.de
Unique Bargains 25 x 7.200MHz 20ppm HC-49S Package Quartz Crystal for PC - Walmart.com