Compatible with: CR2025 Fitbit Zip Wireless Activity Tracker FB301M Please note that transportation of lithium batteries requires special conditions which may cause longer delivery times. Therefore the approximate delivery time for lithium batteries is 4-10 business days. Disclaimer: This is not an Original Equipment Manufacturer (OEM) product HQRP branded product is a replacement. All brand names and logos are registered trademarks of their respective owners. Any use of the brand names or model designations for this product are made solely for purposes of demonstrating compatibility.