The Renata 377 SR626SW is a reliable, Swiss-made silver oxide button cell battery engineered for long-lasting performance in low-drain devices. With a stable 1.55V output and 28mAh capacity, it is ideal for analog watches, calculators, medical tools, and compact electronics. Known for its leak-proof design, high precision, and extended shelf life, the Renata 377 ensures consistent and dependable power in delicate applications.