Check the listing for details. Battery Replacement for Fitbit Alta Activity Tracker Smart Fitness Watch FB406. Condition: New. Listed at 12.99 USD. Battery Replacement for Fitbit Alta Activity Tracker Smart Fitness Watch FB406 Package includes:1 x Replacement Battery1 x Tool Kits Notice: 1. Each item is 100% Tested Before Shipping.2. Fast free ship, send from C.A. by USPS. Estimated delivery time for domestic (USA) orders is 3-7 days.3. New batteries often display virtual power. In this case, you need to charge the battery to a full charge state, after running out of electricity, then charge it to full charge again. After doing this several times, it will be normal.4. We offer 30 days refund or exchange policy on defective or wrong items since you receive the item. 5. Any queries or issues incurred, please feel free to contact us via eBay messages, we are always here ready for help.