Varta Superlife zinc batteries offer a very good value for money. They are the perfect choice for low drain devices such as wall clocks, alarm clocks or remote controls. Varta Superlife zinc batteries are lighter than their alkaline counterparts. VARTA is one of the world's leading battery manufacturers. Technical specification : VARTA TYPE: 2020 IEC marking: R20 Cell size: D Diameter: 34.2 mm Height: 61.5 mm Weight: 99.2 g Electrochemical System: Zinc Carbon (ZN / CA) Voltage: 1.5V