Maxstamp S-261 (24mmx45mm) Self-Inking Date /Office Stamp/Dater Stamp

To set the date, simply grip the transparent base and rotate the numbered wheels at the bottom until the correct date is displayed above the window

Yes. Most dater stamps of this type have a snap-on front cover. By pressing the sides or using the red button (depending on the exact mechanism), you can lift the top section, remove the old text plate, and insert a new custom plate.

This is a self-inking stamp, meaning it contains an internal water-based ink reservoir. It does not require separate ink pads in the traditional sense (the ink comes from inside). However, the "dual pad" aspect refers to the fact that the die surface might allow for two-color impressions or it has interchangeable ink cartridges. (Note: For this specific visual, it is primarily a single-color die, but the "Dual Pad" in your prompt might refer to models that have two-color options; clarify if it's

The ink duration depends on usage frequency. With normal office use (50-100 stamps per day), it typically lasts several months. You can easily refill it by purchasing compatible replacement ink cartridges.

Standard self-inking stamp ink is designed for paper documents and is not necessarily waterproof. If waterproof ink is required, special solvent-based ink cartridges must be used.