The Apple Watch Hermes (Series 8) models are sold as a "partnership" between Apple and French luxury brand Hermes. Like earlier Apple Watch Hermes devices, this model effectively is a 45 mm stainless steel Apple Watch Series 8 -- complete with the "Always On" 396x484 LTPO OLED screen covered with a protective "Sapphire crystal" layer -- but with custom packaging and model-specific watch faces and software tweaks. All Apple Watch Series 8 models are highly similar to the Apple Watch Series 7 models that they replaced, but they have temperature sensors for expanded health monitoring, a more powerful gyroscope and accelerometer to support Crash Detection for automobile crashes, and a Low Power Mode option. All cellular-equipped Apple Watch Series 8 models, including this one, are capable of being connected to the Internet without a "tethered" iPhone, but it still is intended to be used with an iPhone 8 or later running iOS 16 or later for some functions. All Apple Watch Series 8 devices are controlled with a Digital Crown with haptic feedback and a touch capable display and have a ceramic and sapphire crystal back that connects to the charger, as well. Battery life is an Apple estimated "up to 18 hours" overall in modest use; the "Low Power Mode" option can extend battery life to up to 36 hours by disabling the Always-On Display and other functions.