This is a metal housed DIP Crystal Resonator manufactured by Yangxing that is a 8MHz ±20ppm HC-49S RoHS certified device. The part number for this device is X49SD8MSD2SC. The features of this device include low current consumption, outstanding frequency stability and reliability, and a small form factor that makes it suitable for compact applications. It is designed for oscillator circuits, such as oscillator circuits found in electronic watches, remote controllers, cars, and other electronic devices. This device has a sealed package and anti-static function. Additionally, this device is RoHS certified to be free of hazardous materials.