Deep Dive Teardown of the Garmin Forerunner 965 A04578 Smartwatch

Deep Dive Teardown of the Garmin Forerunner 965 A04578 Smartwatch

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The Garmin Forerunner 965 is the successor of Forerunner 955. Both smartwatches support WiFi, Bluetooth, NFC, and GPS connectivity but not LTE communication. Both the Garmin Forerunner 965 and 955 are very similar, a large part of their design is based on the same ICs (MCUs, GPS receiver, NAND Flash Memory, Power Management chip, WiFi/Bluetooth module, and many others). Both devices are equipped with variety of sensors like an accelerometer, gyroscope, compass, magnetic sensor, pulse oximeter, heart rate sensor, and altimeter which allows the wearer to track body parameters during sport or sleep. The new version of Forerunner has two major improvements according to predecessor: a larger battery (420 mAh vs 342 mAh) and a larger OLED display (1.4-inch vs 1.3-inch TFT). Several manufacturers share design wins for the Garmin Forerunner 965 A04578. NXP supplied #MRT595SFFOC MCU and #SN100T NFC and Security chip. Ambiq Micro has supplied the Apollo3 Blue MCU which collects and prepares all sensors data for MRT555SFF0C main MCU. Silicon Labs provided RS9116N-SB00-B00, 2.4 GHz WiFi 4/Bluetooth 5.0 module. Airoha Technology supports AG3335M GPS Receiver. For this device, Samsung supplied KLMBG2JETD-B041, 32 GB NAND Flash memory.

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