ABM12W-37.4000MHZ-7-D1X-T3 is an IoT-optimized low-profile quartz crystal designed for energy-saving wearables and IoT applications. The device features a compact 1.6 × 1.2 × 0.4 mm form factor with exceptionally low plating capacitance and optimized equivalent series resistance (ESR), making it ideal for height-constrained designs. Operating over a temperature range of -40°C to +85°C with ±15 ppm frequency stability and ±10 ppm frequency tolerance at 25°C, this crystal delivers reliable performance with an ESR of less than 60 O at 37.0–52.0 MHz and a load capacitance of 7 pF. The seam-sealed construction ensures long-term reliability, and the device is RoHS/RoHS II compliant. Common applications include Bluetooth/BLE modules, wireless connectivity, ultra-low power microcontrollers, NFC systems, and ISM band devices where compact size and low power consumption are essential.