The E8WSDC09-32.768KTR is a watch crystal resonator designed for precision timekeeping in portable and embedded systems. It operates at a nominal frequency of 32.768 kHz with a frequency tolerance of ±20 ppm at 25°C and features a tuning fork (flexural mode) design with an equivalent series resistance of 70 kOhms maximum and shunt capacitance of 1.6 pF maximum. The device is housed in a compact plastic surface mount package measuring 1.5mm × 3.2mm × 0.9mm with seam-sealed construction and gold-plated nickel terminals, operating reliably over a temperature range of -40°C to +85°C with frequency stability of -0.040 ppm/(°C)² maximum. This crystal is ideal for real-time clock (RTC) applications, wearable devices, and low-power timing circuits where compact size and high accuracy are essential.