As the Global Navigation Satellite System (GNSS) supports 5G communication networks, data centers and other mission-critical infrastructures, the reliance on precise frequency and timing has increased. Smaller size and high-performance atomic clock technology has become the necessary criterion to support industry and commerce. Taitien’s atomic oscillators offer excellent performance and exceptional accuracy, stability and reliability under the most challenging environments. Meanwhile, these devices combined low drift rates, excellent short-term stability and stable frequency during temperature changes which enabled them to maintain accurate frequency and time during GNSS interruptions. Taitien’s atomic oscillators are ideally suited for portable battery-powered applications where the available power is limited, as well as fast and accurate frequencies are required after power on. With the built-in 1 PPS function, these devices provide atomic clock accuracy, miniature size, light weight and low power consumption, which makes them ideal for various commercial, industrial, space and defense applications that require performance and durability.