If you're a power user or you vape throughout the day, you might want a device with adjustable wattage. Higher wattage gives bigger clouds but drains the battery faster. Lower wattage preserves flavor and battery. For desk carry, you probably want low wattage—it's more discreet.

Another advanced feature is USB-C fast charging. Some pens take two hours to charge; others hit 80% in 30 minutes. That's a huge difference if you're always on the move. Check the specs before you buy.

You could also look into temperature control. Some devices let you set the exact temperature in degrees, which is great if you're picky about vapor density. But for most desk users, this is overkill. Stick with a simple device unless you know you need it.

One more thing: consider odor control. While the vapor doesn't smell like smoke, it's not scentless. A quick puff of air freshener or a small fan can help. Some people keep a tiny spritz bottle at their desk. It's not about hiding it entirely—just being courteous.