Bushnell X-8 TRAIL CAM Manuel D'instructions page 24

Troubleshooting / FAQ
Camera won't retain settings
Make sure that you have been saving the changes to any parameter
settings that you made while in Setup mode, by pressing "OK" after
changing the setting. If you don't save your new setting after changing
it, the camera will continue to use the original default setting for that
parameter.
Do not mix old and new batteries.
Do not mix battery types-use ALL lithium or ALL alkaline.
Rechargeable batteries are not recommended.
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