TAG Heuer Unveils Fifth-Gen Calibre E5 with Own OS

TAG Heuer has unveiled the fifth-generation Connected Calibre E5 smartwatch, offering a redesigned case, a new proprietary operating system and a 40mm New Balance edition aimed at runners. The company says the line will be available from October 2025 and will ship in two sizes, 45mm and 40mm, in stainless steel or titanium configurations with price and material-dependent options.

The Calibre E5 runs TAG Heuer OS, a custom platform built on Android and certified under Apple’s Made for iPhone program to improve pairing and feature support with iPhones. TAG Heuer said the move away from Google’s Wear OS reflects a strategic choice to better serve the brand’s large iPhone-using customer base and to exercise more control over the watch’s software and user experience. The company also highlights improved responsiveness and a navigation model that relies more on a rotating crown and two physical pushers than on touchscreen swipes.

Hardware updates include a Qualcomm Snapdragon Wear 5100 series processor, dual-band GPS, Bluetooth 5.3, Wi-Fi and water resistance to 50 meters. The 45mm model carries a 1.39-inch AMOLED display while the 40mm uses a 1.20-inch AMOLED panel. TAG Heuer...