You'll never have problems finding your Sprint MiFi if it's turned on. The Sprint logo glows yellow, the power button glows green, and there's a small green LED showing your activity. All can be turned off from the control screens seen earlier.
If there's one thing I really like about the MiFi from Sprint, it's that it matches the MacBook line. It's obvious from the owner's manual that Sprint considers Mac users to be a prime audience, since they make the Mac an equal-opportunity player.
While I was able to get about 4 hours of usage from a full battery charge, if you have some additional users you may find your battery life is a bit less. You can shut down the LEDs or have the device perform other power management functions from this screen.