GP Batteries Non-Rechargeable Batteries Button cell 620996 - GP GPCR1616STD691C1, The GP Button cell CR 1616 is a lithium battery manufactured by GP, offering 3 volts of power. It is commonly used in wristwatches and pocket calculators due to its compact size and reliable performance. This button cell ensures long-lasting energy, making it ideal for small electronic devices. GP GPCR1616STD691C1 Button Cell CR1616 3V High Energy Low Self-Discharge