1.5 V. 815-6K. Long lasting guaranteed (For more details about our money back performance guarantee or leak-proof guarantee visit: www.rayovac.com/mbg). Leak-proof guarantee (For more details about our money back performance guarantee or leak-proof guarantee visit: www.rayovac.com/mbg). Performance guarantee. We've spent over 110 years thinking about batteries so you can think about them less. Rayovac High Energy batteries are long lasting, guaranteed - plain and simple or your money back. (For more details about our money back performance guarantee or leak-proof guarantee visit: www.rayovac.com/mbg). Guaranteed to provide long lasting power in high devices. (For more details about our money back performance guarantee or leak-proof guarantee visit: www.rayovac.com/mbg). 10 years power guarantee in storage. 100% recyclable card. Made in the USA with US and global parts.