Pros:

1. Reliability: Mechanical locks have a long-standing track record of reliability and durability. They do not rely on batteries or power sources, making them less prone to malfunctions due to power outages or battery failures.
2. No Code Memorization: Mechanical locks typically use a dial or combination wheel, eliminating the need to remember and input a passcode.
3. Resistance to Hacking: Mechanical locks are less susceptible to hacking or electronic manipulation attempts since they lack electronic components or interfaces.

Cons:

1. Slower Entry: Opening a safe with a mechanical lock can be more time-consuming compared to electronic locks, as it involves precise manipulation of the dial or combination wheel.
2. Combination Reset: Changing the combination on a mechanical lock can be more involved and requires following specific instructions provided by the manufacturer.
3. Limited Features: Mechanical locks generally lack advanced features such as time delay or multiple user codes, which are commonly found in electronic locks.