Retail Price: ¥12,000 The following is an excerpt from the product page: World Plus CF-VZSU0EJS VZSU0FJS Battery Compatible with Panasonic Let's note CF-RZ4 CF-RZ5 CF-RZ6 ■Voltage: 7.6V, Capacity: 4860mAh, ■Estimated number of charge cycles: 500 times. ■Estimated usage time: Approximately 3 hours. (Charging cycles and usage time may vary depending on the model and usage.) WorldPlus original battery for PC. Remaining battery indicator, can be charged with the main unit and genuine charger. ◆Compliant with Japan's unique high safety standards (PSE). ◆Complete protection functions: Overcurrent protection, overcharge protection, over-discharge protection, short circuit protection, and other functions. ◆Compatible battery model numbers: CF-VZSU0EJS, VZSU0FJS. ◆Compatible PC model numbers: Panasonic: CF-RZ4 CF-RZ5 CF-RZ6 ⭐︎Shipping Method Shipped in an envelope. Since it is new and unopened, please contact the manufacturer in the event of an initial defect.