sentences:  The lack of a display screen also provides significant power saving – enabling a battery life of two years or more, in contrast to other smartwatches that must be charged daily.This product line uses "MotionX" core technology, licensed from the California-based company Fullpower Technologies and was developed in a joint venture known as Manufacture Modules Technologies (MMT).In 2018, Frederique Constant reveals the world's first mechanical smartwatch, the Hybrid Manufacture that fuses smartwatch technology with a mechanical movement.