• Reliable energy for small devices: ITSON CR2016 lithium button batteries are ideal for car keys, watches, heart rate monitors, garage door openers, and Wi-Fi devices. • Extreme energy: they provide uninterrupted power in temperatures from -30 °C to 60 °C. • 10-year shelf life: they can retain their energy for at least 10 years if stored at room temperature. • Child safety: they come in child-safe packaging. • No added Hg: they do not contain mercury, offering safe and efficient performance.