Calibre E3

Battery capacity is 440 mAh, providing a full day of use that encompasses several hours of athletic activity. It reaches a full charge in 90 minutes via a 4-pin charger with LED status lights. Sensors include a heart rate monitor, compass, accelerometer, gyroscope, microphone, and NFC, all running on Wear OS by Google. It is compatible with Android 6.0 or higher (excluding Go edition) and iOS 12.0 or higher, featuring pre-installed TAG Heuer Sports and Wellness apps. Connectivity is handled via Wi-Fi and Bluetooth 4.1, with a SAR rating of 0.014 W/kg. The chipset features a quad-core 32-bit CPU with ARM Cortex A7 cores clocked at up to 1.2 GHz, and the display resolution is 454x454 pixels at 326ppi.