Calibre E4

Equipped with a 440 mAh battery, it offers a full day of autonomy including multiple hours of exercise and charges to 100% in 90 minutes using a 4-pin LED-equipped charger. The device includes a heart rate monitor, compass, accelerometer, gyroscope, NFC, microphone, barometer, and ambient light sensor, powered by Wear OS by Google. It supports Android 6.0+ (excluding Go edition) and iOS 13.0+, with pre-installed TAG Heuer Wellness, Golf, and Sports applications. Connectivity options include Wi-Fi and Bluetooth 5.0, with a SAR rating of 0.9390 W/kg. The 64-bit architecture utilizes a quad-core ARM Cortex A53 CPU with a clock speed reaching 1.7 GHz.