The VARTA V377/SR66 is a high-quality silver oxide button cell with a 1.5 V output. Ideal for watches, measuring instruments, remote controls, car keys, and other small electronic devices, it offers a compact and reliable power source for everyday use.• Silver oxide technology • 1.5 V voltage • Replaces type 377, SR626SW, and similar • Diameter: 6.8 mm, thickness: 2.6 mm • Single-use, non-rechargeable